"After I had written a paper or letter for Bohr, I always had the impression that I had learned somet..." — Werner Heisenberg

If we made atomic bombs, we would bring about a terrible change in the world. Who knows what would happen from this?

The single life is bearable to me only through my work in science, but for the long term, it would be very bad if I had to make do without a very young person next to me.

Bohr's influence on the physics and the physicists of our century was stronger than that of anyone else, even than that of Albert Einstein.

For Germany, the war was like an end game in chess in which she possessed one castle less than her adversary. The loss of the war was as certain as the loss of an end game under these conditions.