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Theory


Theory

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Quotations

Vladimir LeninWithout Revolutionary theory, there can be no Revolutionary Movement.

—  Vladimir Lenin, 1870-1924, Soviet revolutionary & leader

7 likes
R. D. BlackmoreAn ounce of action is worth a ton of theory.

—  R. D. Blackmore, 1825-1900, English novelist

     (misattributed to Gandhi, Emerson, Engels and others)

3 likes
Immanuel KantExperience without theory is blind, but theory without experience is mere intellectual play.

—  Immanuel Kant, 1724-1804, German philosopher

3 likes
Arthur Conan DoyleIt is a capital mistake to theorize before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts.

—  Arthur Conan Doyle, 1859-1930, British writer

3 likes
Samuel JohnsonAll theory is against the freedom of the will; all experience for it.

—  Samuel Johnson, 1709-1784, English writer

2 likes
Marcel ProustA work in which there are theories is like an object which still has the ticket that shows its price.

—  Marcel Proust, 1871-1922, French writer

2 likes
H.L. MenckenA professor must have a theory as a dog must have fleas.

—  H.L. Mencken, 1880-1956, American columnist & cultural critic

2 likes
Ludwig Wittgenstein If I cannot say a priori what elementary propositions there are, then the attempt to do so must lead to obvious nonsense.

—  Ludwig Wittgenstein, 1889-1951, Austrian philosopher

Graham GreeneHe knew everything in theory, nothing in practice... He knew the moves, he’d never played the game.

—  Graham Greene, 1904-1991, British writer

Hermann HesseTheory is knowledge that doesn't work. Practice is when everything works and you don't know why.

—  Hermann Hesse, 1877-1962, German writer, Nobel 1946

Thomas SowellFacts do not “speak for themselves.” They speak for or against competing theories. Facts divorced from theory or visions are mere isolated curiosities.

—  Thomas Sowell, 1930 -, American political thinker

Funny Quotes

Yogi BerraIn theory there is no difference between theory and practice; in practice there is.

—  Yogi Berra, 1925-2015, American baseball player & humorist

4 likes



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