If I were to remain silent, I'd be guilty of complicity.

No problem is ever solved in the same consciousness thas was used to create it.

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

Even trivial events demonstrate strong devotion to the Universe and small concern for ego.

It is the duty of every citizen according to his best capacities to give validity to his convictions in political affairs.

Play is the highest from of research.

There is one ray of hope. It seems to me that today the responsible leaders of the several peoples have, in the main, the honest will to abolish war.