One must be cunning and wicked in this world.

...so remember: great achievements take time, there is no overnight success.

True science investigates and brings to human perception such truths and such knowledge as the people of a given time and society consider most important. Art transmits these truths from the region of perception to the region of emotion.

In order to know what he is, a man must first know what the sum of this mysterious humanity is, a humanity made up of people who, like himself, do not understand what they are.

You consider war to be inevitable? Very good. Let everyone who advocates war be enrolled in a special regiment of advance-guards, for the front of every storm, of every attack, to lead them all!

People try to do all sorts of clever and difficult things to improve life instead of doing the simplest, easiest thing-refusing to participate in activities that make life bad.

The vocation of every man and woman is to serve other people.