It is not in our hands to prevent our birth; but we can correct this mistake - for in some cases it is a mistake.

Whatever a theologian regards as true must be false: there you have almost a criterion of truth.

When one gives up the Christian faith, one pulls the right to Christian morality out from under one's feet. This morality is by no means self-evident. Christianity is a system, a whole view of things thought out together. By breaking one main concept out of it, the faith in God, one breaks the whole. It stands or falls with faith in God.

The Superman is the meaning of the earth. Let your will say: The Superman shall be the meaning of the earth!

Every word is a preconceived judgment.

In some remote corner of the universe, poured out and glittering among innumerable solar systems, there once was a star on which clever animals invented knowledge.

It is the evening that questions thus from within me.