It's not the intensity of the man, but the duration of his intensity that makes the man great.

Even truthfulness is but one means to knowledge, a ladder--but not the ladder.

But thus do I counsel you, my friends: distrust all in whom the impulse to punish is powerful! Distrust all those who talk much of their justice!

It is hard enough to remember my opinions, without also remembering my reasons for them!

The essence of all beautiful art, all great art, is gratitude.

Today a man of knowledge might well feel as though he were God transformed into an animal.

Your god is dead and only the ignorant weep. And if you claim there is a hell, then we shall meet there!