I do not share the crusading spirit of the professional atheist whose fervor is mostly due to a painful act of liberation from the fetters of religious indoctrination received in youth. I prefer an attitude of humility corresponding to the weakness of our intellectual understanding of nature and of our own being.

I never think of the future. It comes soon enough. When visiting the U.S. from Germany for a winter academic stay.

More the knowledge lesser the Ego, lesser the knowledge, more the Ego.

The only rational way of educating is to be an example. If one can't help it, a warning example.

Science can only ascertain what is, but not what should be, and outside of its domain value judgements of all kinds remain necessary.

My political ideal is democracy. Let every man be respected as an individual and no man idolized.

With all my heart I believe that the world's present system of sovereign nations can only lead to barbarism, war and inhumanity, and that only world law can assure progress towards a civilized peaceful community.