The fundamental laws necessary for the mathematical treatment of a large part of physics and the whole of chemistry are thus completely known, and the difficulty lies only in the fact that application of these laws leads to equations that are too complex to be solved.

The methods of theoretical physics should be applicable to all those branches of thought in which the essential features are expressible with numbers.

I admired Bohr very much. We had long talks together, long talks in which Bohr did practically all the talking.

Living is worthwhile if one can contribute in some small way to this endless chain of progress.

Quantum mechanics has explained all of chemistry and most of physics.

God used beautiful mathematics in creating the world.

Pick a flower on Earth and you move the farthest star.