Letter 83 — On Drunkenness (§8)

“What is it, then, you ask, to which I have been giving my attention? I will tell you. A thought sticks in my mind, left over from yesterday,—namely, what men of the greatest sagacity have meant when they have offered the most trifling and intricate proofs for problems of the greatest importance,—proofs which may be true, but none the less resemble fallacies.”