OATH : Put more trust in nobility of character than in an oath. (Solon: Greek statesman, lawmaker, and poet who is often credited with having laid the foundations for Athenian democracy, 6th century)

OBEDIENCE : Disobedience is the true foundation of liberty. Obedience is an act of faith; disobedience is the result of unbelief. (Henry David Thoreau: U.S. author, philosopher, abolitionist, naturalist, and historian, 1817-1862)

OBEDIENCE : Women are perfectly well aware that the more they seem to obey the more they rule. (Jules Michelet: French historian who was the first to use and define the word 'Renaissance' as a period in Europe's cultural history that represented a dramatic break from the Middle Ages, 1798-1874)

OBESITY : Imprisoned in every fat man a thin one is wildly signaling to be let out. (Cyril Connolly: English literary critic, writer, and editor, 1903-1974)

OBITUARIES : Obituaries have next to nothing to do with death and absolutely everything to do with life. (Margait Fox: U.S. writer, Born 1961)

OBJECTORS : War hath no fury like a non-combatant. (C. E. Montague: English journalist, novelist, and essayist, 1867-1928)

OBLIGATIONS : Without duty, life is soft and boneless; it cannot hold itself together. (Joseph Joubert: French moralist and essayist, 1754-1824)

OBSERVATION : If I have ever made any valuable discoveries, it has been owing more to patient observation than to any other reason. (Isaac Newton: English mathematician, physicist, astronomer, theologian, and author who is widely recognized as one of the most influential scientists of all time and a key figure in the scientific revolution, 1642-1727)

OBSESSION : If you are possessed by an idea, you find it expressed everywhere, you even smell it. (Thomas Mann: German novelist, short story writer, social critic, philanthropist, essayist, and recipient of the Nobel Prize in Literature, 1875-1955)

OBSTACLES : An obstacle is often a stepping stone. (William Prescott: U.S. colonel in the Revolutionary War who commanded the patriot forces in the Battle of Bunker Hill, 1726-1795)

OBSTACLES : Every path has its puddle. (Unknown Source: )

OBSTACLES : If you find a path with no obstacles, it probably doesn't lead anywhere. (Frank A. Clark: U.S. lawyer and politician who served in public and private practice for some 50 years, including 20 years in the U.S. Congress, 1860-1936)

OBSTACLES : It isn't the mountain ahead that wears you out—it's the grain of sand in your shoe. (Robert W. Service: British-Canadian poet and writer, often called 'the Bard of the Yukon,' 1874-1958)

OBSTACLES : Living at risk is jumping off the cliff and building your wings on the way down. (Ray Bradbury: U.S. author and screenwriter who wrote in a variety of genres, 1920-2012)

OBSTACLES : Men trip not on mountains, they stumble on stones (Marilyn French: U.S. radical feminist author, 1929-2009)

OBSTACLES : No bud, no lotus. The lotus is a most beautiful flower, but it will only grow in the mud. You must first have the mud — the obstacles of life and its suffering — in order to grow and gain wisdom. (Chinese Proverb: )

OBSTACLES : Obstacles are those frightful things you see when you take your eyes off the goal. (Henry Ford: U.S. industrialist, the founder of the Ford Motor Company, and the sponsoring developer of the assembly line technique of mass production, 1863-1947)

OBSTACLES : Obstacles are those frightful things you see when you take your eyes off your goal. (Henry Ford: U.S. industrialist, the founder of the Ford Motor Company, and the sponsoring developer of the assembly line technique of mass production, 1863-1947)

OBSTACLES : Storms make trees take deeper roots. (Dolly Parton: U.S. singer, songwriter, multi-instrumentalist, record producer, actress, author, businesswoman, and humanitarian, known primarily for her work in country music, Born 1946)

OBSTACLES : Success is to be measured not so much by the position that one has reached in life as by the obstacles he has overcome trying to succeed. (Booker T. Washington: U.S. educator, author, orator, advisor to presidents of the United States, and the dominant leader in the African-American community, 1856-1915)

OBSTACLES : The block of granite which is an obstacle in the pathway of the weak becomes a steppingstone in the pathway of the strong. (Thomas Carlyle: Scottish philosopher, satirical essayist, historian, and mathematician, 1795-1881)

OBSTACLES : The despotism of custom is everywhere standing up to human advancement. (John S. Mill: British philosopher, political economist, and civil servant, 1806-1873)

OBSTACLES : The greater the obstacle, the more glory in overcoming it. (Moliere: French playwright, actor, and poet, widely regarded as one of the greatest writers in the French language and universal literature and whose plays have been translated into every major living language, 1622-1673)

OBSTACLES : The obstacle is the path. (Unknown Source: )

OBSTACLES : The obstacles of your past can become the gateways that lead to new beginnings. (Ralph Blum: U.S. actor and writer, Born 1932)

OBSTACLES : To turn an obstacle to one's advantage is a great step towards victory. (Unknown Source: )

OBSTACLES : Turn your stumbling blocks into stepping stones. (Unknown Source: )

OBSTACLES : Wanna fly, you got to give up the shit that weighs you down. (Toni Morrison: U.S. African-American novelist, editor, professor, social reformer, and recipient of the Nobel Prize for Literature, 1931-2019)

OBSTACLES : You will find a joy in overcoming obstacles. (Helen A. Keller: U.S. author, political activist, and lecturer who was the first deaf-blind person to earn a bachelor of arts degree, 1880-1968)

OBSTINACY : A stiff attitude is one of the phenomena of rigor mortis. (Henry S. Haskins: U.S. stockbroker and man of letters, 1875-1957)

OBSTINACY : If you never budge, don't expect a push. (Malcolm Forbes: U.S. wealthy entrepreneur, most prominently known as the publisher of 'Forbes' magazine, 1919-1990)

OBSTINACY : No one can save the one who closes his ears to the truth. (Unknown Source: )

OBSTINACY : None so blind as those that will not see. (Matthew Henry: British Nonconformist minister and author, best known for the six-volume biblical commentary Exposition of the Old and New Testaments, 1662-1714)

OBSTINACY : Some people have minds like cement---all mixed up and permanently set. (Alfred E. Neuman: the fictitious mascot and cover-boy of the American humor magazine, “Mad.”)

OBSTINACY : The difference between perseverance and obstinacy is that one comes from a strong will, and the other from a strong won't. (Henry W. Beecher: U.S. clergyman, social reformer, and speaker, known for his support of the abolition of slavery, 1813-1887)

OBSTINACY : The man who never alters his opinion is like standing water, and breeds reptiles of the mind. (William Blake: English poet, painter, and printmaker, 1757-1827)

OBSTINACY : The nationalist not only does not disapprove of atrocities committed by his own side, he has a remarkable capacity for not even hearing about them. (George Orwell: English novelist, essayist, journalist, and critic, known for his outspoken support of democratic socialism, 1903-1950)

OBSTINACY : There are none so deaf as those who will not hear. (English proverb: )

OBSTINACY : Those who cannot change their minds, cannot change anything. (George B. Shaw: Irish playwright, critic, polemicist, and recipient of the Nobel Prize in Literature, 1856-1950)

OBSTINACY : You cannot make a crab walk straight. (Unknown Source: )

OCCUPATION : Him that makes shoes goes barefoot himself. (Henry Burton: English puritan whose ears were cut off for writing pamphlets attacking the views of the British Archbishop, 1578-1648)

OCCUPATION : Let the beauty of what you love be what you do. (Rumi: 13th-century Persian 13th century poet, Islamic scholar, Maturidi theologian, and Sufi mystic, 1207-1273)

OCCUPATION : The rule of my life is to make business a pleasure, and pleasure my business. (Aaron Burr: U.S. politician. lawyer, and third U.S. vice-president serving during President Thomas Jefferson's first term., 1756-1836)

OCEAN : All know that the drop merges into the ocean but few know that the ocean merges into the drop. (Unknown Source: )

OCEAN : How inappropriate it is to call this planet 'Earth' when it is quite clearly ocean. (Arthur C. Clarke: U.S. science fiction writer and undersea explorer, 1917-2008)

OCEAN : Love the sea? I dote upon it—from the beach. (Douglas W. Jerrold: English dramatist and writer, 1803-1857)

OFFENSIVENESS : Avoid witticisms at the expense of others. (Horace Mann: U.S. politician and educational reformer, 1796-1859)

OFFENSIVENESS : Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it. (Rene Descartes: French philosopher and mathematician, 1596-1650)

ONE-SIDEDNESS : He that never changes his opinions, and never corrects his mistakes, will never be wiser on the morrow than he is today. (Tyron Edwards: U.S. theologian and Congregational minister, 1809-1894)

ONE-SIDEDNESS : He who cannot change the very fabric of his thought will never be able to change reality. (Anwar Sadat: Egyptian politician and military officer who served as the third president of Egypt until his assassination, 1918-1981)

ONE-SIDEDNESS : He who knows only his own side of the case knows little of that. (John S. Mill: British philosopher, political economist, and civil servant, 1806-1873)

ONE-SIDEDNESS : It is useless to attempt to reason a man out of a thing he was never reasoned into. (Jonathan Swift: Anglo-Irish satirist, essayist, political pamphleteer, poet, and cleric, 1667-1745)

ONE-SIDEDNESS : Most of our so-called reasoning consists in finding arguments for going on believing as we already do. (James H. Robinson: U.S. historian who greatly broadened the scope of historical scholarship, 1863-1936)

ONE-SIDEDNESS : There are none so blind as those who will not see. (English proverb: )

OPEN-MINDEDNESS : A change in perspective is worth 80 IQ points. (Alan Kay: U.S. computer scientist and an elected Fellow of the American Academy of Arts and Sciences, Born 1940)

OPEN-MINDEDNESS : A mind is like a parachute. It doesn’t work if it is not open. (Frank Zappa: U.S. musician, singer, composer, songwriter, bandleader, and satirist of U.S. culture, 1940-1993)

OPEN-MINDEDNESS : Experience teaches only the teachable. (Aldous Huxley: English writer and philosopher who wrote nearly fifty books—both novels and non-fiction works—and was widely acknowledged as one of the foremost intellectuals of his time, 1894-1963)

OPEN-MINDEDNESS : He who listens to truth is not less than he who utters truth. (Kahlil Gibran: Lebanese-American writer in both Arabic and English, visual artist, and Syrian nationalist, 1883-1931)

OPEN-MINDEDNESS : I don't want to rule or conquer anyone. I should like to help everyone if possible; Jew, gentile, black man, white. (Charles Chaplin: English comic actor, filmmaker, and composer who rose to fame during the era of silent film, 1889-1977)

OPEN-MINDEDNESS : I have forced myself to contradict myself in order to avoid conforming to my own taste. (Marcel Duchamp: French painter, sculptor, chess player, and writer, 1887-1968)

OPEN-MINDEDNESS : I want to stay as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center. (Kurt Vonnegut: U.S. writer, 1922-2007)

OPEN-MINDEDNESS : If a better system is thine, impart it; if not, make use of mine. (Horace: Roman lyric poet, 65 B.C.E.- 8 B.C.E)

OPEN-MINDEDNESS : If we do not believe in freedom of speech for those we despise, we do not believe in it at all. (Noam Chomsky: U.S. linguist, cognitive scientist, social critic, and political activist. Born 1928)

OPEN-MINDEDNESS : If you do not fling old ideas out of your mind, you cannot give birth to new ones. (Peter Dunov: Bulgarian philosopher and spiritual teacher, 1864-1944)

OPEN-MINDEDNESS : It is hard to free fools from the chains they revere. (Voltaire: )

OPEN-MINDEDNESS : It is not the strongest of the species that survive, nor the most intelligent, but the one most responsive to change. (Charles Darwin: English naturalist, geologist, and biologist, best known for his contributions to the science of evolution, 1809-1882)

OPEN-MINDEDNESS : It is the mark of an educated mind to be able to entertain a thought without accepting it. (Aristotle: Greek philosopher and scientist who, along with Plato, is considered the ‘Father of Western Philosophy,’ 384-322 B.C.E.)

OPEN-MINDEDNESS : It requires wisdom to understand wisdom; the music is nothing if the audience is deaf. (Walter Lippmann: U.S. reporter, political commentator, writer who coined the word 'Stereotype,' and received two Pulitzer Prizes, 1889-1974))

OPEN-MINDEDNESS : Learn how to bend and you'll never have to break. (Unknown Source: )

OPEN-MINDEDNESS : Learn how to bend, and you’ll never have to break. (Aesop Fable: )

OPEN-MINDEDNESS : Minds are like parachutes. They only function when they are open. (James Dewar: British chemist and physicist who is best known for his invention of the vacuum flask,1842-1923)

OPEN-MINDEDNESS : Never limit yourself because of others' limited imagination; never limit others because of your own limited imagination. (Mae C. Jemison: U.S. engineer, physician, former NASA astronaut when she became the first African-American woman to travel into space on the Space Shuttle Endeavor, Born, 1956)

OPEN-MINDEDNESS : Notice that the stiffest tree is most easily cracked, while the bamboo or willow survives by bending with the wind. (Bruce Lee: Hong Kong-American martial artist and actor whose career spanned Hong Kong and the United States, 1940-1973)

OPEN-MINDEDNESS : One's destination is never a place but rather a new way of looking at things. (Henry Miller: U.S. novelist, 1891-1980)

OPEN-MINDEDNESS : Some say it’s holding on that makes you strong. Sometimes it’s letting go. (Herman Hesse: German-born poet, painter, novelist, and recipient of the Nobel Prize In Literature, whose works include "Steppenwolf," and "Siddhartha," 1877-1962)

OPEN-MINDEDNESS : The purpose of education is to replace an empty mind with an open mind. (Malcolm Forbes: U.S. wealthy entrepreneur, most prominently known as the publisher of 'Forbes' magazine, 1919-1990)

OPEN-MINDEDNESS : The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it. (Terry Pratchett: English author of fantasy novels, 1948-2015)

OPEN-MINDEDNESS : The world is like a Mask dancing. If you want to see it well, you do not stand in one place. (Chinua Achebe: Nigerian novelist, poet, professor, and critic, 1930-2013)

OPEN-MINDEDNESS : To see the other side, to defend another people, not despite our tradition but because of it, is the heart of pluralism. (Eboo Patel: U.S. founder of Interfaith Youth Core, Born 1975)

OPEN-MINDEDNESS : You never really understand a person until you consider things from his point of view. (Harper Lee: U.S. novelist widely known for "To Kill a Mockingbird," for which she received a Pulitzer Prize and the Presidential Medal of Freedom, 1926-2016)

OPENNESS : We can't plan life. All we can do is be available for it. (Lauryn Hill: U.S. singer, songwriter, rapper, record producer, and actress , Born 1975)

OPENNESS : We must let go of the life we have planned, so as to accept the one that is waiting for us. (Joseph Campbell: U.S. mythologist, writer, and lecturer, 1904-l987)

OPERA : How wonderful opera would be if there were no singers. (Gioacchino Rossini: Italian composer who gained fame for his 39 operas, 1792-1868)

OPERA : Opera in English is, in the main, just about as sensible as baseball in Italian. (H. L. Mencken: U.S. journalist, essayist, satirist, cultural critic, and scholar of American English, 1880-1956)

OPINIIONS : Don't keep searching for the truth, just let go of your opinions. (Gautama Buddha: Asian ascetic and sage, on whose teachings Buddhism were founded and who lived sometime between the sixth and fourth centuries B.C.E.)

OPINIIONS : If a man would register all his opinions . . . beginning from his youth and so go on to old age, what a bundle of inconsistencies and contradictions would appear at last! (Jonathan Swift: Anglo-Irish satirist, essayist, political pamphleteer, poet, and cleric, 1667-1745)

OPINIONS : A great many people think they are thinking when they are merely rearranging their prejudices. (William James: U.S. philosopher and psychologist whose influence led to his being known as the ‘Father of American Psychology,’ 1842-1910)

OPINIONS : A man's opinion is no better than his information. (Lyndon B. Johnson: U.S. politician who served as the 36th President of the United States, 1908-1973)

OPINIONS : A straw vote only shows which way the hot air blows. (O. Henry: U.S. short-story writer, 1862-1910)

OPINIONS : Although the connections are not always obvious, personal change is inseparable from social and political change. (Harriet Lerner: U.S. clinical psychologist and contributor to feminist theory and therapy, Born 1944)

OPINIONS : Change your thoughts and you change your world. (Norman V. Peale: U.S. minister and author known for his work in popularizing the concept of positive thinking, 1898-1993)

OPINIONS : Every man has a right to utter what he thinks truth, and every other man has a right to knock him down for it. (Samuel Johnson: English poet, playwright, essayist, critic, biographer, editor, and lexicographer, 1709-1784)

OPINIONS : Everyone has a belief system, B.S., the trick is to learn not to take anyone's B.S. too seriously, especially your own. (Robert A. Wilson: U..S. author, futurist, psychologist, and self-described agnostic mystic., 1932-2007)

OPINIONS : Everyone is entitled to his own opinion but not his own facts. (Daniel P. Moynihan: U.S. politician and sociologist, 1927-2003)

OPINIONS : Few people are capable of expressing with equanimity opinions that differ from that of their social environment. (Albert Einstein: German-born theoretical physicist and Nobel Laureate who developed the theory of relativity, one of the two pillars of modern physics, 1879-1955)

OPINIONS : I find the great thing in this world is not so much where we stand, as in what direction we are moving. (Oliver W. Holmes, Jr.: U.S. jurist who served for 30 years as an Associate Justice of the Supreme Court of the United States, 1841-1935)

OPINIONS : If you don't read, you will only know your opinion. (Unknown Source: )

OPINIONS : It is not opposition but indifference which separates men (Mary P. Follett: U.S. social worker, pioneer in the fields of organizational theory, who has been called the 'Mother of Modern Management', 1868-1933)

OPINIONS : It is of no consequence what others think of you. What matters is what you think of them. (Gore Vidal: U.S. writer and political pundit, 1925-2012)

OPINIONS : It often takes more courage to change one's opinion than to stick to it. (George C. Lichtenberg: German experimental physicist, satirist, and Anglophile, 1742-1799,)

OPINIONS : Loyalty to a petrified opinion never yet broke a chain or freed a human soul. (Mark Twain: U.S. writer, humorist, entrepreneur, publisher, and lecturer, 1835-1910)

OPINIONS : Men are divided in opinion as to the facts. And even granting the facts, they explain them in different ways. (Edwin Abbott: English schoolmaster and theologian, 1838-1926)

OPINIONS : Most of our so-called reasoning consists in finding arguments for going on believing as we already do. (James H. Robinson: U.S. historian who greatly broadened the scope of historical scholarship, 1863-1936)

OPINIONS : Necessity is not an established fact, but an interpretation. (Friedrich Nietzsche: German philosopher, cultural critic, poet, philologist, and Latin and Greek scholar, 1844-1900)

OPINIONS : Nothing limits intelligence more than ignorance; nothing fosters ignorance more than one's own opinions; nothing strengthens opinions more than refusing to look at reality. (Sheri S. Tepper: U.S. writer known known for her feminist science fiction, which explored themes of sociology, gender, and equality, (1929-2016))

OPINIONS : Opinion . . . is but knowledge in the making. (John Milton: English poet, polemicist, man of letters, and civil servant who is best known for his epic poem, 'Paradise Lost,' 1608-1674)

OPINIONS : Opinion is ultimately determined by the feelings and not by the intellect. (Herbert Spencer: English philosopher, biologist, anthropologist, and sociologist, 1820-1903)

OPINIONS : Other countries may think Americans live in an infantile fantasy land where reality is whatever we say it is and every problem can be solved with violence. (Bill Maher: U,S. comedian, political commentator, and television host, Born 1956)

OPINIONS : Perhaps the most delightful friendships are those in which there is much agreement, much disputation, and yet more personal liking. (George Eliot: English novelist [pen name of Mary Ann Evans], poet, journalist, translator, and one of the leading writers of the Victorian era, 1819-1880)

OPINIONS : Public opinion’s always in advance of the law. (John Galsworthy: English novelist and playwright who won the Nobel Prize in Literature, 1867-1933)

OPINIONS : Reason, with most people, means their own opinions. (William Hazlitt: English essayist, drama and literary critic, painter, social commentator, and philosopher, 1778-1830)

OPINIONS : The deadliest contagion is majority opinion. (Henry S. Haskins: U.S. stockbroker and man of letters, 1875-1957)

OPINIONS : The fact that an opinion has been widely held is no evidence whatever that it is not utterly absurd; indeed, in view of the silliness of the majority of mankind, a widespread belief is more likely to be foolish than sensible. (Bertrand Russell: British philosopher, mathematician, historian, and Nobel Laureate, 1872-1970)

OPINIONS : The fewer the facts, the stronger the opinion. (Arnold H. Glasow: U.S. businessman, 1905-1998)

OPINIONS : The man who never alters his opinion is like standing water, and breeds reptiles of the mind. (William Blake: English poet, painter, and printmaker, 1757-1827)

OPINIONS : The most erroneous stories are those we think we know best—and therefore never scrutinize or question. (Stephen J. Gould: U.S. paleontologist, evolutionary biologist, and historian of science, 1941-2002)

OPINIONS : The reason facts don’t change most people’s opinions is because most people don’t use facts to form their opinion. They use their opinions to form their ‘facts’. (Neil Strauss: U.S. author, journalist, and ghost writer, Born 1969)

OPINIONS : The world is changed by your example, not by your opinion. (Paulo Coelho: Brazilian lyricist and novelist and a member of the Brazilian Academy of Letters, Born 1947)

OPINIONS : There are two kinds of fools: One says, "This is old, therefore it is good"; the other says, "This is new, therefore it is better." (William R. Inge: English author and Anglican priest who was a three-time nominee for the Nobel Prize in Literature, 1860-1954)

OPINIONS : There is no accounting for taste. (Unknown Source: )

OPINIONS : There is nothing insignificant in the world. It all depends on the point of view. (Johann v. Goethe: German statesman and writer of poetry, dramas, and numerous scientific treatises, 1749-1832)

OPINIONS : Think for yourself and let others enjoy the right to do the same. (Voltaire: French Enlightenment writer, historian, and philosopher famous for his wit, and an advocate for separation of church and state, 1694-1778)

OPINIONS : Those people who think they know everything are a great annoyance to those of us who do. (Isaac Asimov: U.S. professor of biochemistry and science-fiction writer, 1920-1992)

OPINIONS : Too often we enjoy the comfort of opinion without the discomfort of thought. (John F. Kennedy: U.S. politician who served as the 35th president of the United States in 1961 until his assassination, 1917-1963)

OPINIONS : Truth, in matters of religion, is simply the opinion that has survived. (Oscar Wilde: Irish poet and playwright, 1854-1900)

OPINIONS : We can never be sure that the opinion we are endeavoring to stifle is a false opinion; and if we were sure, stifling it would still be an evil. (John S. Mill: British philosopher, political economist, and civil servant, 1806-1873)

OPINIONS : We have to live today by what truth we can get today and be ready tomorrow to call it falsehood. (William James: U.S. philosopher and psychologist whose influence led to his being known as the ‘Father of American Psychology,’ 1842-1910)

OPINIONS : When two opposite points of view are expressed with equal intensity, the truth does not necessarily lie exactly halfway between them. It is possible for one side to be simply wrong. (Richard Dawkins: British evolutionary biologist and author, Born 1941)

OPINIONS : Where there is much desire to learn, there of necessity will be much arguing . . . many opinions, for opinion is but knowledge in the making. (John Milton: English poet, polemicist, man of letters, and civil servant who is best known for his epic poem, 'Paradise Lost,' 1608-1674)

OPINIONS : Where you stand depends on where you sit. (Rufus Miles: U.S. author and Federal administrator who served as an assistant secretary under three presidents, 1910-1996)

OPPORTUNITIES : Because you are alive, everything is possible (Thich Nhat Hanh: Vietnamese-American Buddhist spiritual leader and peace activist, prolific author, poet, and teacher who was known as the 'Father of Mindfulness' and was a major influence on western practices of Buddhism, 1926-2022)

OPPORTUNITIES : Circumstances are the rulers of the weak; they are but the instruments of the wise. (Samuel Lover: Irish songwriter, composer, novelist, and a painter of portraits, 1797-1868)

OPPORTUNITIES : Defeat should never be a source of discouragement but rather a fresh stimulus. (Robert Southey: English poet of the Romantic school and England's Poet Laureate for 30 years, 1774-1843)

OPPORTUNITIES : Delay not to seize the hour! (Aeschylus: Ancient Greek tragedian who is often described as the ‘Father of Tragedy,' 525—456 B.C.E.)

OPPORTUNITIES : Experience is not what happens to a man. It is what a man does with what happens to him. (Aldous Huxley: English writer and philosopher who wrote nearly fifty books—both novels and non-fiction works—and was widely acknowledged as one of the foremost intellectuals of his time, 1894-1963)

OPPORTUNITIES : Four things come not back: the spoken word, the spent arrow, the past, the neglected opportunity (Umar ibn al-Khaṭṭāb: Arabic caliph, Muslim jurist, and father-in-law of the islamic prophet, Muhammad, c. 583 or 584 C.E. - 644 C.E.)

OPPORTUNITIES : If you don't accept failure as a possibility, you don't set high goals, you don't branch out, you don't try - you don't take the risk. (Rosalynn Carter: U.S. activist who served as First Lady of the United States as the wife of President Jimmy Carter, Born 1927)

OPPORTUNITIES : Man is so made that whenever anything fires his soul, impossibilities vanish. (Jean de la Fontaine: French fable writer and one of the most widely read French poets of the 17th century, 1621-1695)

OPPORTUNITIES : Mistakes are the portals for discovery. (James Joyce: Irish novelist, short story writer, poet, teacher, and literary critic, 1882-1941)

OPPORTUNITIES : Money won’t create success; the freedom to make it will. (Nelson Mandela: South African anti-apartheid revolutionary who served as President of South Africa and received the Nobel Prize for promoting peace, 1918-2013)

OPPORTUNITIES : Never let a good crisis go to waste. (Winston Churchill: British politician who served twice as the Prime Minister of the United Kingdom, 1874-1965)

OPPORTUNITIES : Often when you think you're at the end of something, you're at the beginning of something else. (Fred Rogers: U.S. television personality, musician, puppeteer, writer, and minister, 1928-1993)

OPPORTUNITIES : Only he who keeps his eye fixed on the far horizon will find his right road. (Dag Hammarskjold: Swedish diplomat, economist, and author, who served as the second Secretary-General of the United Nations, 1905-1961)

OPPORTUNITIES : Opportunities are usually disguised as hard work, so most people don't recognize them. (Ann Landers: U.S. syndicated advice-columnist whose work was a regular feature in many newspapers across North America and led to her becoming a cultural icon, 1918-2002)

OPPORTUNITIES : There is always one moment in childhood when the door opens and lets the future in. (Graham Greene: English writer and journalist regarded by many as one of the leading English novelists of the 20th century, 1904-1991)

OPPORTUNITIES : Turn your stumbling blocks into stepping stones. (Unknown Source: )

OPPORTUNITIES : When opportunity knocks, some people are in the backyard looking for four-leaf clovers. (Polish Proverb: )

OPPORTUNITY : A bend in the road is not the end of the road unless you fail to make the turn. (Helen A. Keller: U.S. author, political activist, and lecturer who was the first deaf-blind person to earn a bachelor of arts degree, 1880-1968)

OPPORTUNITY : A pessimist is one who makes difficulties of his opportunities, and an optimist is one who makes opportunities of his difficulties. (Harry S. Truman: U.S. politician who served as the 33rd President of the United States, 1884-1972)

OPPORTUNITY : Ability is of little account without opportunity. (Napoleon: French general and statesman who rose to prominence during the French Revolution and led a series of military campaigns across Europe, 1769-1821)

OPPORTUNITY : Chance favors the prepared mind. (Louis Pasteur: French biologist, microbiologist and chemist renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurization, 1822-1895)

OPPORTUNITY : Decision and determination are the engineer and fireman of our train to opportunity and success. (Burt Lawlor: U.S. Audit manager)

OPPORTUNITY : Deliberation often loses a good chance (Latin Proverb: )

OPPORTUNITY : Fortune brings in some boats that are not steered. (William Shakespeare: English poet, playwright, and actor, widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist, 1564-1616)

OPPORTUNITY : If opportunity doesn’t knock, build a door. (Milton Berle: U.S. comedian, actor. and the first major U.S. television star, known as 'Uncle Miltie,' 1908-2002)

OPPORTUNITY : If you don’t know where you’re going, any road will do. (Unknown Source: )

OPPORTUNITY : In the middle of difficulty lies opportunity. (Albert Einstein: German-born theoretical physicist and Nobel Laureate who developed the theory of relativity, one of the two pillars of modern physics, 1879-1955)

OPPORTUNITY : It is often hard to distinguish between the hard knocks in life and those of opportunity. (Frederick Phillips: Welsh field hockey player and Olympian medal winner, 1884-1948)

OPPORTUNITY : Life gives everyone a second chance; it's called tomorrow. (Unknown Source: )

OPPORTUNITY : Luck is what happens when preparation meets opportunity. (Lucius A. Seneca (the Younger): Roman Stoic philosopher, statesman, and dramatist, c. 4 B.C.E.–A.D. 65)

OPPORTUNITY : Make hay while the sun shines. (Miguel de Cervantes: Spanish writer whose novel, "Don Quixote," has been translated into over 140 languages and dialects-making it, after the "Bible," the most translated book in the world, 1547-1616)

OPPORTUNITY : Never turn down a job because you think it's too small; you never know where it may lead. (Unknown Source: )

OPPORTUNITY : Nothing splendid has ever been achieved except by those who dared to believe that something inside of them was superior to circumstance. (Bruce Barton: U.S. author, advertising executive, and politician, 1886-1967)

OPPORTUNITY : One doesn't discover new lands without consenting to lose sight of the shore for a very long time. (Andre Gide: French author and recipient of the Nobel Prize in Literature, 1869-1951)

OPPORTUNITY : Opportunities are like sunrises. If you wait too long, you miss them. (William A. Ward: U.S. writer of essays, maxims, and poems, 1921-1994)

OPPORTUNITY : Opportunity dances with those who are already on the dance floor. (H. Jackson Brown Jr.: U.S. author, best known for his N.Y. Times Best Seller, Life's Little Instruction Book, 1940-2021)

OPPORTUNITY : Problems are only opportunities in work clothes. (Henry J. Kaiser: U.S. industrialist who established the Kaiser Shipyards after which he formed Kaiser Aluminum, Kaiser Steel, and Kaiser Permanente health care, 1882-1967)

OPPORTUNITY : The activity you’re most avoiding contains your biggest opportunity. (Robin Sharma: Canadian attorney and writer of publication on stress management and spirituality, Born 1964)

OPPORTUNITY : The Chinese use two brush strokes to write the word 'crisis.' One brush stroke stands for danger; the other for opportunity. (John F. Kennedy: U.S. politician who served as the 35th president of the United States in 1961 until his assassination, 1917-1963)

OPPORTUNITY : The obstacles of your past can become the gateways that lead to new beginnings. (Ralph Blum: U.S. actor and writer, Born 1932)

OPPORTUNITY : The world's mine oyster / Which I with sword will open. (William Shakespeare: English poet, playwright, and actor, widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist, 1564-1616)

OPPORTUNITY : Those who have a why or what to live for can bear almost any how. (Friedrich Nietzsche: German philosopher, cultural critic, poet, philologist, and Latin and Greek scholar, 1844-1900)

OPPORTUNITY : To every disadvantage there is a corresponding advantage. (W. C. Stone: U.S. businessman, philanthropist, and self-help book author, 1902-2002)

OPPORTUNITY : Too many people are thinking of security instead of opportunity; they seem more afraid of life than of death. (James F. Byrnes: U.S. judge and politician, having served in the U.S. Congress, the U.S. Supreme Court, and as governor of the state of South Carolina, 1882-1972)

OPPORTUNITY : We've been warned against letting the golden hours slip by, but some of them are golden only because we let them slip by. (James M. Barrie: Scottish novelist and playwright, best remembered today as the creator of "Peter Pan," 1860-1937)

OPPORTUNITY : When the goddess of wealth comes to give you her blessings, you shouldn’t leave the room to wash your face. (Unknown Source: )

OPPORTUNITY : When written in Chinese, the word crisis is composed of two characters. One represents danger and the other represents opportunity. (John F. Kennedy: U.S. politician who served as the 35th president of the United States in 1961 until his assassination, 1917-1963)

OPPOSITES : 'Chalk and cheese' —as different as night and day (Unknown Source: )

OPPOSITES : Almost every wise saying has an opposite one, no less wise, to balance it. (George Santayana: U.S. philosopher, essayist, poet, and novelist, 1863-1952)

OPPOSITES : Opposites are cures for opposites. (Hippocrates: Greek physician who is often referred to as the 'Father of Medicine,' c. 460 B.C.E.—c. 370 B.C.E.)

OPPOSITES : There are two kinds of light—the glow that illuminates, and the glare that obscures. (James Thurber: U.S. cartoonist, author, humorist, journalist, and playwright, 1894-1961)

OPPOSITION : A certain amount of opposition is a great help to a man. Kites rise against, not with, the wind. (John Neal: U.S. architect, lawyer, author, and art critic, 1793-1876))

OPPOSITION : Barricades of ideas are worth more than barricades of stones. (Jose Marti: Cuban revolutionary, journalist, and poet, 1853-1895)

OPPOSITION : Great spirits have always encountered opposition from mediocre minds. (Albert Einstein: German-born theoretical physicist and Nobel Laureate who developed the theory of relativity, one of the two pillars of modern physics, 1879-1955)

OPPOSITION : He that wrestles with us strengthens our nerves and sharpens our skills. Our antagonist is our helper. (Edmund Burke: Anglo-Irish statesman and political philosopher who served in the British parliament and in the House of Commons, 1729-1797)

OPPOSITION : If there is a door that might bring wind, close the door. (Unknown Source: )

OPPOSITION : It is dangerous to be right when the government is wrong. (Unknown Source: )

OPPOSITION : Kites rise highest against the wind, not with it. (Winston Churchill: British politician who served twice as the Prime Minister of the United Kingdom, 1874-1965)

OPPOSITION : O Lord, help me not to despise or oppose what I do not understand. (William Penn: U.S. writer, Quaker, and founder of the English North American colony the Province of Pennsylvania, known for his advocacy of democracy and religious freedom, and notable for his good relations with the Lenape Native Americans, 1644-1718)

OPPOSITION : Opposition inflames the enthusiast, never converts him. (J.C.F Von Schiller: German poet, philosopher, physician, historian, and playwright, 1864-1937)

OPPOSITION : Strong people are made by opposition, like kites that go up against the wind. (Frank Harris: Irish-American editor, novelist, short story writer, journalist, and publisher,1856-1931)

OPPOSITION : The man who is swimming against the stream knows the strength of it. (Woodrow Wilson: U.S. politician and academic who served as the 28th President of the United States, 1856-1924)

OPPOSITION : We can sing the truth and name the liars.... We must work to overturn the false narrative of tyrants. (Salman Rushdie: British Indian novelist and essayist, Born 1947)

OPPRESSION : Almost always religion seemed to stand for blind belief and reaction, dogma and bigotry, superstition, exploitation and the preservation of vested interests. (Jawaharal Nehru: India's first Prime Minister as a secular democratic republic, one who was a central figure in Indian politics before and after independence, 1889-1964)

OPPRESSION : Another world is not only possible, she is on her way; on a quiet day I can hear her breathing. (Arundhati Roy: Indian author and political activist in human rights and environmental causes, Born 1961)

OPPRESSION : Dictators ride to and fro upon tigers from which they dare not dismount. (Unknown Source: )

OPPRESSION : He who allows oppression, shares the crime. (Erasmus Darwin: English physician who was a natural philosopher, physiologist, slave-trade abolitionist, inventor, and poet— and was also the grandfather of Charles Darwin, 1731-1802)

OPPRESSION : He who would make his own liberty secure must guard even his enemy from oppression; for if he violates this duty, he establishes a precedent that will reach to himself. (Thomas Paine: U.S. political activist, and as a revolutionary he was one of the Founders of the United States of America, 1737-1809)

OPPRESSION : I found one day in school a boy of medium size ill-treating a smaller boy. I expostulated, but he replied: "The bigs hit me, so I hit the babies; that's fair." In these words he epitomized the history of the human race. (Bertrand Russell: British philosopher, mathematician, historian, and Nobel Laureate, 1872-1970)

OPPRESSION : I suppose it is tempting, if the only tool you have is a hammer, to treat everything as if it were a nail. (Abraham Maslow: U.S. psychologist best known for creating Maslow's Hierarchy of Needs, a theory of psychological health predicated on fulfilling innate human needs, culminating in self-actualization, 1908-1970)

OPPRESSION : If you are neutral in situations of injustice, you have chosen the side of the oppressor. (Desmond Tutu: South African Anglican Archbishop known for his work as an anti-apartheid and human rights activist and the first black African to hold the position, Born 1931)

OPPRESSION : If you put a chain around the neck of a slave, the other end fastens itself around your own. (Ralph W. Emerson: U.S. essayist, poet, and philosopher who led the transcendentalist movement, 1803-1882)

OPPRESSION : Man was born free, and everywhere he is in chains. (Jean-Jacques Rousseau: Francophone Genevan philosopher, writer, and composer whose work influenced the progress of the Enlightenment throughout Europe, as well as aspects of the French Revolution, 1712-1778)

OPPRESSION : Master, I marvel how the fishes live in the sea. Why, as men do on land, do the great fish eat up the little ones? (Unknown Source: )

OPPRESSION : Necessity is the plea for every infringement of human freedom. (William Pitt Sr.: British statesman of the Whig group who served as Prime Minister of Great Britain, 1708-1788)

OPPRESSION : Nobody in history has gotten their freedom by appealing to the moral sense of the people oppressing them. (Assata Shakur: U.S. former member of the Black Liberation Army, Born 1947)

OPPRESSION : Of all the injuries inflicted by racism on people of color, the most corrosive is the wound within, the internalized racism that leads some victims . . . to embrace the values of their oppressors. (H. J. Geiger: U.S. medical doctor, and founding member and past president of Physicians for Social Responsibility, Born 1926)

OPPRESSION : Once you burn books, soon you will be burning people. (Heinrich Heine: German poet, writer and literary critic whose radical political views led to many of his works being banned by German authorities, 1797-1856)

OPPRESSION : People want dignity, bread, and fairness — and see their ruling elites as parasites gorging themselves on the labor of others. (William DuBay: U.S. Catholic priest and social activist, Born 1934)

OPPRESSION : Riots are the voice of the unheard. (Martin L. King Jr.: U.S. Baptist minister and activist who was a prominent leader in the U.S. Civil Rights Movement, using the tactics of non-violence and civil disobedience, 1929-1968)

OPPRESSION : Society is divided into two classes, the shearers and the shorn. (Unknown Source: )

OPPRESSION : The limits of tyrants are prescribed by the endurance of those whom they oppress. (Frederick Douglass: African-American social reformer, abolitionist, orator, and statesman, 1818-1895)

OPPRESSION : The man dies in all who keep silent in the face of tyranny. (Wole Soyinka: Nigerian playwright, poet, essayist, and recipient of the Nobel Prize in Literature — the first sub-Saharan to be honored in that category, Born 1934)

OPPRESSION : The most potent weapon in the hands of the oppressor is the mind of the oppressed. (Steve Biko: African nationalist and socialist and major South African anti-apartheid leader, 1946-1977)

OPPRESSION : The oppressor would not be so strong if he did not have accomplices among the oppressed. (Simone d. Beauvoir: French existentialist philosopher, writer, social theorist, and feminist activist,1908-1986)

OPPRESSION : There's really no such thing as the 'voiceless'. There are only the deliberately silenced or the preferably unheard. (Arundhati Roy: Indian author and political activist in human rights and environmental causes, Born 1961)

OPPRESSION : When foxes guard the henhouses, the hens don't flourish. (Unknown Source: )

OPPRESSION : You can’t hold a man down without staying down with him. (Booker T. Washington: U.S. educator, author, orator, advisor to presidents of the United States, and the dominant leader in the African-American community, 1856-1915)

OPPRESSION : You only have power over people as long as you don't take everything away from them. But when you've robbed a man of everything, he's no longer in your power -- he's free again. (Alexander Solzhenitsyn: Russian novelist, historian, short story writer, and recipient of the Nobel Prize for Literature, and who was an outspoken critic of the Soviet Union, 1918-2008)

OPPRESSION : You've got to be twice as good to get half as far. (Negro Proverb: )

OPTIMISM : A misty morning does not signify a cloudy day. (Unknown Source: )

OPTIMISM : A pessimist is one who makes difficulties of his opportunities, and an optimist is one who makes opportunities of his difficulties. (Harry S. Truman: U.S. politician who served as the 33rd President of the United States, 1884-1972)

OPTIMISM : Life is like a mirror. Smile at it and it smiles back at you. (Peace Pilgrim: U.S. non-denominational spiritual teacher and peace activist who for 28 years walked across the United States, speaking with others about peace, 1908-1991)

OPTIMISM : Optimism is an intellectual choice. (Diana Schneider: German singer and entertainer)

OPTIMISM : Optimism is essential to achievement and it is also the foundation of courage and of true progress. (Nicholas M. Butler: U.S. philosopher, diplomat, educator, and president of Columbia University, 1862-1947)

OPTIMISM : Optimism, unaccompanied by personal effort, is merely a state of mind and not fruitful. (Edward L. Curtis: U.S. Idaho Secretary of State, 1883–1884,)

OPTIMISM : Pessimism of the intellect must be balanced by the optimism of the will. (Antonio Gramsci: Italian Marxist philosopher, journalist, linguist, writer, and politician, 1891-1937)

OPTIMISM : Some people see the sunset, some the beginning of darkness. (Unknown Source: )

OPTIMISM : The optimist proclaims that we live in the best of all possible worlds; and the pessimist fears this is true. (James Cabell: U.S. author of fantasy fiction and other genres, 1879-1958)

OPTIMISM : Turn your face to the sun and the shadows fall behind you. (Maori Proverb: )

OPTIMISM : What one needs in life are the pessimism of intelligence and the optimism of will. (Andre de Staercke: Belgian Ambassador to NATO - the North American Trade Organization, 1913-2001)

OPTIMISM : When fate hands you a lemon, make lemonade (Dale Carnegie: U.S. developer of famous courses in self-improvement, salesmanship, public speaking, and interpersonal skills, 1888-1955)

OPTIMIST : A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty (Winston Churchill: British politician who served twice as the Prime Minister of the United Kingdom, 1874-1965)

OPTIMIST : Someone who figures out that when taking a step backward after taking a step forward is not a disaster, it’s a cha-cha. (Robert Brault: U.S. operatic tenor, Born 1963)

OPTIMIST : The optimist sees the rose and not its thorns; the pessimist stares at the thorns, oblivious of the rose. (Kahlil Gibran: Lebanese-American writer in both Arabic and English, visual artist, and Syrian nationalist, 1883-1931)

OPTIONS : I can’t change the direction of the wind, but I can adjust my sails to reach my destination. (Jimmy Dean: country music singer, television host, actor, and businessman, 1928-2010)

OPTIONS : Life is change. Growth is optional. Choose wisely. (Unknown Source: )

OPTIONS : The obstacle is the path. (Unknown Source: )

OPTIONS : There's small choice in rotten apples. (William Shakespeare: English poet, playwright, and actor, widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist, 1564-1616)

OPTIONS : We must each ask ourselves: "What is the right and creative thing for me to do in this hour"—and do it! (Unknown Source: )

ORATORS : Fear prophets and those prepared to die for the truth, for . . . they make many others die with them, often before them, and, at times instead of them. (Umberto Eco: Italian novelist, literary critic, and semiotician, 1932-2016)

ORATORY : A speech does not need to be eternal to be immortal. (Muriel Humphrey: U.S. politician who, as the wife of Vice-President Hubert Humphrey, served as the Second Lady of the United States and later as a U.S. Senator, 1912-1998)

ORATORY : Nothing is so unbelievable that oratory cannot make it acceptable. (Unknown Source: )

ORATORY : The object of oratory alone is not truth, but persuasion. (Thomas B. Macaulay: British historian, author, and politician, 1800-1859)

ORDERLINESS : A filing cabinet is a place where you can lose things systematically. (Unknown Source: )

ORDERLINESS : Chaos often brings life while order brings habit. (Unknown Source: )

ORDERLINESS : Treat your wastebaskets like babies; keep them within reach at all times, feed them frequently, and change them often. (Unknown Source: )

ORIGINALITY : An artist should never be a prisoner of himself, prisoner of style, prisoner of reputation, prisoner of success, etc. (Henri Matisse: French visual artist, known as a painter, print maker, and sculptor, 1869-1954)

ORIGINALITY : It is better to fail in originality than to success in imitation. (Herman Melville: U.S. novelist, short-story writer, 1819-1891)

ORIGINALITY : The creative act the— defeat of habit by originality—overcomes everything (George Lois: Greek-American art director, designer, and author, Born 1931)

ORIGINALITY : The more original a discovery, the more obvious it seems afterward. (Arthur Koestler: Hungarian-British author and journalist, 1905-1983)

ORIGINALITY : The notion that one can begin anything at all from scratch—free from the past or un-indebted to others—could not conceivably be more wrong. (Unknown Source: )

ORIGINALITY : When Shakespeare is charged with debts to his authors, Landor replies, "Yet he was more original than his originals. He breathed upon dead bodies and brought them into life." (Ralph W. Emerson: U.S. essayist, poet, and philosopher who led the transcendentalist movement, 1803-1882)

ORIGINATOR : In science the credit goes to the man who convinces the world, not to the man to whom the idea first occurs. (William Osier: Canadian physician, one of the founders of Johns Hopkins Hospital, and known ast he 'Father of Modern Medicine,' 1849-1919)

ORIGINS : Home is not where you were born; it is where all of your attempts to escape cease. (Omar Taher: Egyptian writer and filmproducer, Born, 1973)

OUTCOMES : Defeat may serve as well as victory to shake the soul and let the glory out. (Edwin Markham: U.S. social protest poet and Poet Laureate of the state of Oregon, 1852-1940)

OUTCOMES : He who laughs last laughs best (Spanish Proverb: )

OUTCOMES : There is a crack in everything. That's how the light gets in. (Leonard Cohen: Canadian musician, poet, and novelist, 1934-2016)

OUTRAGE : Better that we should die fighting than be outraged and dishonored. Better to die than to live in slavery. (Emmeline Pankhurst: British political activist who organised the British suffragette movement and helped women to win in 1918 the right to vote in Great Britain and Ireland, 1858-1928)

OUTSPOKENNESS : Credit is sometimes attributed to a noisy rooster who claims credit for the dawn. (Unknown Source: )

OVER-AMBITION : A shoe too large trips you up. (Unknown Source: )

OVER-CONFIDENCE : It is the best swimmers who drown. (Unknown Source: )

OVER-PROTECTION : Should you shield the canyons from the windstorms you would never see the true beauty of their carvings. (Elisabeth Kubler-Ross: Swiss-American psychiatrist, a pioneer in near-death studies, and author of the ground-breaking book, "Death and Dying," 1926-2004)

OVER-THINKING : To think too long about doing a thing often becomes its undoing- (Unknown Source: )

OVERCAUTIOUSNESS : He that is overcautious will accomplish little. (J.C.F Von Schiller: German poet, philosopher, physician, historian, and playwright, 1864-1937)

OVERLOAD : We can lick gravity, but sometimes the paperwork is overwhelming. (Werner Von Braun: German-American aerospace engineer and space architect, 1912-1977)

OVERWEIGHT : I'm not overweight, I'm just nine inches too short. (Shelley Winters: U.S. film actress whose career spanned seven decades, which included winning two Academy Awards, 1920-2006)

OWNERSHIP : Mine is better than ours. (Benjamin Franklin: Leading Founder of the U.S., author, printer, politician, scientist, inventor, statesman, and diplomat 1706-1790)

OWNERSHIP : Own what you can always carry with you; know languages, know countries, know people. Let your memory be your bag. (Alexander Solzhenitsyn: Russian novelist, historian, short story writer, and recipient of the Nobel Prize for Literature, and who was an outspoken critic of the Soviet Union, 1918-2008)

OWNERSHIP : Security depends not so much upon how much you have, as upon how much you can do without. (Joseph W. Krutch: U.S. writer, critic, and naturalist, 1893-1970)

OWNERSHIP : The instinct of ownership is fundamental in man's nature. (William James: U.S. philosopher and psychologist whose influence led to his being known as the ‘Father of American Psychology,’ 1842-1910)