To defend something is always to discredit it. Let a man have a warehouse full of gold, let him be willing to give away a ducat to every one of the poor - but let him also be stupid enough to begin this charitable undertaking of his with a defense in which he offers three good reasons in justification; and it will almost come to the point of people finding it doubtful whether indeed he is doing something good. But now for Christianity. Yes, the person who defends that has never believed in it.

It is the duty of the human understanding to understand that there are things which it cannot understand, and what those things are. Human understanding has vulgarly occupied itself with nothing but understanding, but if it would only take the trouble to understand itself at the same time it would simply have to posit the paradox.

It goes against the grain for me to do what so often happens, to speak inhumanly about the great as if a few millennia were an immense distance. I prefer to speak humanly about it, as if it happened yesterday, and let only the greatness itself be the distance.

To venture causes anxiety, but not to venture is to lose one's self.... And to venture in the highest is precisely to be conscious of one's self.

The presence of irony does not necessarily mean that the earnestness is excluded. Only assistant professors assume that.

God creates everything out of nothing. And everything which God is to use, he first reduces to nothing

Never cease loving a person, and never give up hope for him, for even the prodigal son who had fallen most low, could still be saved; the bitterest enemy and also he who was your friend could again be your friend; love that has grown cold can kindle.