In the last analysis, even the best man is evil: in the last analysis, even the best woman is bad.

A good aphorism is too hard for the tooth of time, and is not worn away by all the centuries, although it serves as food for every epoch. Hence it is the greatest paradox in literature, the imperishable in the midst of change, the nourishment which always remains highly valued, as salt does, and never becomes stupid like salt.

What doesn't kill you make you stronger.

Glance into the world just as though time were gone: and everything crooked will become straight to you.

The destiny of the human race is to widen the gap separating it from the lower races of animals. Any code of morality which retains its permanence and authority after the conditions of existence which gave rise to it have changed, works against this upward progress of man.

Blessed are the forgetful: for they get the better even of their blunders.

The most unequivocal sign of contempt for man is to regard everybody merely as a means to one's own ends, or of no account whatever.