All religions, arts and sciences are branches of the same tree.

I was supposed to choose apractical profession, but this was simply unbearable to me.

The flag is a symbol of the fact that man is still a herd animal.

Have the courage to take your own thoughts seriously, for they will shape you.

Why does this magnificent applied science which saves work and makes life easier bring us so little happiness? ... The simple answer runs: 'Because we have not yet learned to make sensible use of it.'

I do not believe in immortality of the individual, and I consider ethics to be an exclusively human concern with no superhuman authority behind it.

Human beings are not condemned, because of their biological constitution, to annihilate each other or to be at the mercy of a cruel, self-inflicted fate.