Mere unbelief in a personal God is no philosophy at all.

When the Special Theory of Relativity began to germinate in me, I was visited by all sorts of nervous conflicts... I used to go away for weeks in a state of confusion.

I became more and more convinced that even nature could be understood as a relatively simple mathematical structure.

Let every man judge according to his own standards, by what he has himself read, not by what others tell him.

But science can only be created by those who are thoroughly imbued with the aspiration toward truth and understanding. This source of feeling, however, springs from the sphere of religion. To this there also belongs the faith in the possibility that the regulations valid for the world of existence are rational, that is, comprehensible to reason. I cannot conceive of a genuine scientist without that profound faith. The situation may be expressed by an image: science without religion is lame, religion without science is blind.

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

It is the same with people as it is with riding a bike. Only when moving can one comfortably maintain one's balance.