Reason unites us, not only with our contemporaries, but with men who lived two thousand years before us, and with those who will live after us.

A human can be healthy without killing animals for food.

Perhaps it's because I appreciate all I have so much that I don't worry about what I haven't got.

The artist of the future will live the ordinary life of a human being, earning his living by some kind of labour. He will strive to give the fruit of that supreme spiritual force which passes through him to the greatest number of people, because this conveying of the feelings that have been born in him to the greatest number of people is his joy and his reward. The artist of the future will not even understand how it is possible for an artist, whose joy consists in the widest dissemination of his works, to give these works only in exchange for a certain payment.

So long as people do not consider all men as their brothers and do not consider human life as the most sacred thing, which rather than destroy they must consider it their first and foremost duty to support; that is so long as people do not behave towards one another in a religious manner, they will always ruin one another's lives for the sake of personal gain.

One must be cunning and wicked in this world.

There are two methods of human activity - and according to which one of these two kinds of activity people mainly follow, are there two kinds of people: One use their reason to learn what is good and what is bad and they act according to this knowledge; the other act as they want to and then they use their reason to prove that that which they did was good and that which they didn't do was bad.