Friedrich Nietzsche

Egoism is the very essence of a noble soul.

In individuals, insanity is rare; but in groups, parties, nations, and epochs it is the rule.

In order to acquire intellect one must need it. One loses it when it is no longer necessary.

Every extension of knowledge arises from making the conscious the unconscious.

Where there is the tree of knowledge, there is always Paradise: so say the most ancient and most modern serpents.

Is man one of God's blunders or is God one of man's blunders?

What is evil? -Whatever springs from weakness.

The sick are the greatest danger for the healthy; it is not from the strongest that harm comes to the strong, but from the weakest.

Believe me! The secret of reaping the greatest fruitfulness and the greatest enjoyment from life is to live dangerously!

This is the hardest of all: to close the open hand out of love, and keep modest as a giver.