If I had it [life] to do all over again, I'd have been a plumber.

I never thought that others would take my theories so much more seriously than I did.

By academic freedom I understand the right to search for truth and to publish and teach what one holds to be true. This right implies also a duty: one must not conceal any part of what on has recognized to be true. It is evident that any restriction on academic freedom acts in such a way as to hamper the dissemination of knowledge among the people and thereby impedes national judgment and action.

It is important to foster individuality, for only the individual can produce the new ideas.

As I have said so many times, God doesn't play dice with the world.

The only way to escape the personal corruption of praise is to go on working. One is tempted to stop and listen to it. The only thing is to turn away and go on working. Work. There is nothing else.

Enjoying the joys of others and suffering with them-these are the best guides for man.