One is not converted to christianity; one must be morbid enough for it.

That which intoxicates, the sensually ecstatic, the sudden surprise, the urge to be profoundly stirred at any price -- dreadful tendencies!

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.

It is certainly not the least charm of a theory that it is refutable; it is precisely thereby that it attracts the more subtle minds. It seems that the hundred-times-refuted theory of the "free will" owes its persistence to this charm alone; some one is always appearing who feels himself strong enough to refute it.

The demand to be loved is the greatest of all arrogant presumptions.

Why does man not see things? He is himself standing in the way: he conceals things.

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