Madness is the result not of uncertainty but certainty.

There are few pains so grievous as to have seen, divined, or experienced how an exceptional man has missed his way and deteriorated

Without the perpetual counterfeiting of the universe by number, man could not continue to live

To be ashamed of one's immorality: that is a step on the staircase at whose end one is also ashamed of one's morality.

In his heart every man knows quite well that, being unique, he will be in the world only once and that no imaginable chance will for a second time gather together into a unity so strangely variegated an assortment as he is: he knows it but hides it like a bad conscience.

Preparatory human beings. - I welcome all signs that a more virile, warlike age is about to begin, which will restore honour to courage above all! For this age shall prepare the way for one yet higher, and it shall gather the strength that this higher age will require some day - the age that will carry heroism into the search for knowledge and that will wage wars for the sake of ideas and their consequences.

"Ego," sayest thou, and art proud of that word. But the greater thing - in which thou art unwilling to believe - is thy body with its big sagacity; it saith not "ego," but doeth it.