What can the schools do to defend democracy? Should they preach a specific political doctrine? I believe they should not. If they are able to teach young people to have a critical mind and a socially oriented attitude, they will have done all that is necessary.

The mathematician knows some things, no doubt, but not those things one usually wants to get from him.

Imagination is the most powerful force in the universe.

You are right in speaking of the moral foundations of science, but you cannot turn around and speak of the scientific foundations of morality.

It has often been said, and certainly not without justification, that the man of science is a poor philosopher.

The economists will have to revise their theories of value.

The beauty of it is that we have to content ourselves with the recognition of the miracle, beyond which there is no legitimate way out.