Nothing is more fatal to happiness than the remembrance of happiness.

What eludes logic is the most precious element in us, and one can draw nothing from a syllogism that the mind has not put there in advance.

The loveliest creations of men are persistently painful. What would be the description of happiness? Nothing, except what prepares and then what destroys it.

The only real education comes from what goes counter to you.

Every instant of our lives is essentially irreplaceable: you must know this in order to concentrate on life.

Complete possession is proved only by giving. All you are unable to give possesses you.

One is always wrong to open a conversation with the devil, for, however he goes about it, he always insists upon having the last word.