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Fallacies, which do not cease to be fallacies because they become fashions. — G.K. Chesterton · 1930Poets do not go mad; but chess-players do. Mathematicians go mad, and cashiers; but creative artists very seldom. I am not, as will be seen, in any sense attacking logic: I only say that this danger does lie in logic, not in imagination. — G.K. Chesterton · 1908Reason is always a kind of brute force; those who appeal to the head rather than the heart, however pallid and polite, are necessarily men of violence. We speak of "touching" a man's heart, but we can do nothing to his head but hit it. — G.K. Chesterton · 1902
If it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic. — Lewis Carroll · 1871"Contrariwise," continued Tweedledee, "if it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic." — Lewis Carroll · 1871
With method and logic one can accomplish anything! — Agatha Christie · 1924
How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth? — Arthur Conan Doyle · 1890