If [quantum theory] is correct, it signifies the end of physics as a science.

I have yet to figure out whether it is I am that am crazy, or the world.

It is this mythical, or rather symbolic, content of the religious traditions which is likely to come into conflict with science. This occurs whenever this religious stock of ideas contains dogmatically fixed statements on subjects which belong in the domain of science.

The idea of a personal God is quite alien to me and seems even naïve.

The aim of science is, on the one hand, as complete a comprehension as possible of the connection between perceptible experiences in their totality, and, on the other hand, the achievement of this aim by employing a minimum of primary concepts and relations.

Earnestly I must exert myself in order to return as much as I have received.

I am not only a pacifist but a militant pacifist. I am willing to fight for peace. Nothing will end war unless the people themselves refuse to go to war.