Not doubt, certainty is what drives one insane.

A man who has depths in his shame meets his destiny and his delicate decisions upon paths which few ever reach . . .

Without forgetting it is quite impossible to live at all.

At the beginning of a marriage ask yourself whether this woman will be interesting to talk to from now until old age. Everything else in marriage is transitory: most of the time is spent in conversation.

Asceticism is the right way of thinking for those who have to extirpate their sensual drives because they are ravening beasts of prey. But only for those!

The value of life itself cannot be estimated.

One who is unassuming in dealing with people exhibits his arrogance all the more strongly in dealing with things (city, state, society, age, mankind). That is his revenge.