Mankind must work continually to produce individual great human beings - this and nothing else is the task... for the question is this : How can your life, the individual life, retain the highest value, the deepest significance? Only by living for the good of the rarest and most valuable specimens.

Error has made animals into men; is truth in a position to make men into animals again?

What we do in dreams we also do when we are awake: we invent and fabricate the person with whom we associate - and immediately forget we have done so.

The lie is a condition of life.

Just as soon as we notice that someone has to force himself to pay attention when dealing and talking with us, we have a valid demonstration that he does not love us or that he does not love us anymore.

We set no special value on the possession of a virtue until we percieve that it is entirely lacking in our adversary.

Physiologists should think before putting down the instinct of self-preservation as the cardinal instinct of an organic being. A living thing seeks above all to discharge its strength--life itself is will to power; self-preservation is only one of the indirect and most frequent results.