Verily, I do not like them, the merciful who feel blessed in their pity: they are lacking too much in shame. If I must pity, at least I do not want it known; and if I do pity, it is preferably from a distance.

One is punished best for one's virtues.

In constructing concepts, we overlook the fact that no two things are the same. There is no such thing as the concept of a leaf, only billions and billions of leaves.

Assuming that we have trained our imagination to denounce the past, we will not suffer much from unfulfilled wishes.

I am not bigoted enough for a system-and not even for my system.

And many such good inventions are there, that they are like woman's breasts: useful at the same time, and pleasant.

When we are tired, we are attacked by ideas we conquered long ago.