To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.

Live your life... as though everything is a miracle.

Work is the only thing I do to escape the corruption of praise.

The unleashed power of the atom has changed everything save our modes of thinking and we thus drift toward unparalleled catastrophe.

Solutions to tough problems should be made as simple as possible - and no simpler.

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.

The pursuit of knowledge for its own sake, an almost fanatical love of justice and the desire for personal independence -- these are the features of the Jewish tradition which make me thank my stars that I belong to it.