“A learned man is an idler who kills time by study.”

“The man who writes about himself and his own time is the only man who writes about all people and all time.”

“If you teach a man anything, he will never learn.”

“If history repeats itself, and the unexpected always happens, how incapable must Man be of learning from experience.”

“The most tragic thing in the world is a man of genius who is not a man of honor.”

“The only man who behaved sensibly was my tailor: he took my measure anew every time he saw me, whilst all the rest went on with their old measurements and expected them to fit me.”

“A man learns to skate by staggering about and making a fool of himself. Indeed he progresses in all things by resolutely making a fool of himself.”