Sleeping is no mean art: for its sake one must stay awake all day.

The value of many men and books rests solely on their faculty for compelling all to seek out the most hidden and intimate things.

Regarding life, the wisest men of all ages have judged alike: it is worthless.

Every power draws its ultimate consequences at every moment.

"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.

To call a thing good not a day longer than it appears to us good, and above all not a day earlier - that is the only way to keep joy pure.

Fear is the mother of morality.