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Adams, John • Bacon, Francis • Bible • Bierce, Ambrose • Billings, Josh • Butcher, Jim • Chesterton, Gilbert Keith • Churchill, Winston • Einstein, Albert • Eisenhower, Dwight David • Emerson, Ralph Waldo • Franklin, Benjamin • Fuller, Thomas (1654) • Gaiman, Neil • Galbraith, John Kenneth • Gandhi, Mohandas • Goethe, Johann von • Hazlitt, William • Heinlein, Robert A. • Hoffer, Eric • Huxley, Aldous • Ingersoll, Robert Green • James, William • Jefferson, Thomas • Johnson, Lyndon • Johnson, Samuel • Kennedy, John F. • King, Martin Luther • La Rochefoucauld, Francois • Lewis, C.S. • Lincoln, Abraham • Mencken, H.L. • Orwell, George • Pratchett, Terry • Roosevelt, Eleanor • Roosevelt, Theodore • Russell, Bertrand • Seneca the Younger • Shakespeare, William • Shaw, George Bernard • Stevenson, Adlai • Stevenson, Robert Louis • Twain, Mark • Watterson, Bill • Wilde, Oscar- Only the 45 most quoted authors are shown above. Full author list.
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Quotations about hypothesis
Note that not all quotations have been tagged, so the Search function may find additional quotations on this topic.
It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young.
Konrad Lorenz (1903-1989) Austrian zoologist, ethologist, ornithologist
On Aggression, ch. 2 (1966)
(Source)
When my information changes, I alter my conclusions. What do you do, sir?
John Maynard Keynes (1883-1946) English economist
(Attributed)
Reply to a criticism of having changed his position on monetary policy. Quoted in Paul Samuelson, "The Keynes Centenary" The Economist, Vol. 287 (1983), but possibly apocryphal (see here).
Was I to believe him in earnest in his intention to penetrate to the centre of this massive globe? Had I been listening to the mad speculations of a lunatic, or to the scientific conclusions of a lofty genius? Where did truth stop? Where did error begin?
Jules Verne (1828-1905) French novelist, poet, playwright
Journey to the Center of the Earth, ch. 7 “A Woman’s Courage” (1864) [tr. Malleson]
(Source)
Theories are only verified hypotheses, verified by more or less numerous facts. Those verified by the most facts are the best, but even then they are never final, never to be absolutely believed.
Claude Bernard (1813-1878) French physiologist, scientist
An Introduction to the Study of Experimental Medicine [Introduction à l’Étude de la Médecine Expérimentale] (1865)
I like the scientific spirit — the holding off, the being sure but not too sure, the willingness to surrender ideas when the evidence is against them: this is ultimately fine — it always keeps the way beyond open.
Walt Whitman (1819-1892) American poet
Remark to the author (4 May 1888), Horace Traubel, Walt Whitman’s Camden Conversations [ed. W. Teller (1973)]
The man of science has learned to believe in justification, not by faith, but by verification.
T. H. Huxley (1825-1895) English biologist [Thomas Henry Huxley]
“On the Advisableness of Improving Natural Knowledge” (1870)
