In Christianity neither morality nor religion come into contact with reality at any point.

The Christian resolution to find the world ugly and bad has made the world ugly and bad.

I call Christianity the one great curse, the one great intrinsic depravity, the one great instinct for revenge for which no expedient is sufficiently poisonous, secret, subterranean, petty — I call it the one immortal blemish of mankind.

The very word "Christianity" is a misunderstanding — in truth, there was only one Christian, and he died on the cross.

Christianity destroyed for us the whole harvest of ancient civilization, and later it also destroyed for us the whole harvest of Mohammedan civilization. The wonderful culture of the Moors in Spain, which was fundamentally nearer to us and appealed more to our senses and tastes than that of Rome and Greece, was trampled down (—I do not say by what sort of feet—) Why? Because it had to thank noble and manly instincts for its origin—because it said yes to life, even to the rare and refined luxuriousness of Moorish life![...] Intrinsically there should be no more choice between Islam and Christianity than there is between an Arab and a Jew. The decision is already reached; nobody remains at liberty to choose here. Either a man is a Chandala or he is not.... “War to the knife with Rome! Peace and friendship with Islam!”: this was the feeling, this was the act, of that great free spirit, that genius among German emperors, Frederick II.

What is now decisive against Christianity is our taste, no longer our reasons.