The snake which cannot cast its skin has to die.

I love him whose soul is lavish, who wanteth no thanks and doth not give back: for he always bestoweth, and desireth not to keep for himself.

One must never have spared oneself, one must have acquired hardness as a habit to be cheerful and in good spirits in the midst of nothing but hard truths.

Truth is only an illusion we have forgotten is an illusion.

Whereas the man of action binds his life to reason and its concepts so that he will not be swept away and lost, the scientific investigator builds his hut right next to the tower of science so that he will be able to work on it and to find shelter for himself beneath those bulwarks which presently exist.

The criminal is quite frequently not equal to his deed: he belittles and slanders it.

Truth as Circe. - Error has transformed animals into men; is truth perhaps capable of changing man back into an animal?