We should conserve evil just as we should conserve the forests. It is true that by thinning and clearing the forests the earth grew warmer.

When thou goest to woman, take thy whip.

In art the end does not sanctify the means: but sacred means employed here can sanctify the end.

Actual philosophers... are commanders and law-givers: they say "thus it shall be!", it is they who determine the Wherefore and Whither of mankind, and they possess for this task the preliminary work of all the philosophical laborers, of all those who have subdued the past - they reach for the future with creative hand, and everything that is or has been becomes for them a means, an instrument, a hammer.

Admiration for a quality or an art can be so strong that it deters us from striving to possess it.

Those who know that they are profound strive for clarity. Those who would like to seem profound to the crowd strive for obscurity. For the crowd believes that if it cannot see to the bottom of something it must be profound. It is so timid and dislikes going into the water.

For what purpose humanity is there should not even concern us: why you are here, that you should ask yourself: and if you have no ready answer, then set for yourself goals, high and noble goals, and perish in pursuit of them!