We are, indeed, not among the least contented. You, however, if your belief makes you blessed then appear to be blessed! Your faces have always been more injurious to your belief than our objections have! If these glad tidings of your Bible were written on your faces, you would not need to insist so obstinately on the authority of that book ... As things are, however, all your apologies for Christianity have their roots in your lack of Christianity; with your defense plea you inscribe your own bill of indictment.

No more fiction, for now we calculate; but that we may calculate, we had to make fiction first.

It is the most sensual men who need to flee women and torment their bodies.

We have no organ at all for knowledge, for truth: we know (or believe or imagine) precisely as much as may be useful in the interest of the human herd, the species: and even what is here called usefulness is in the end only a belief, something imagined and perhaps precisely that most fatal piece of stupidity by which we shall one day perish.

To live alone one must be a beast or a god, says Aristotle. Leaving out the third case: one must be both - a philosopher.

Under conditions of peace the warlike man attacks himself.

Science rushes headlong, without selectivity, without "taste," at whatever is knowable, in the blind desire to know all at any cost.