It will never be possible by pure reason to arrive at some absolute truth.

The exact sciences also start from the assumption that in the end it will always be possible to understand nature, even in every new field of experience, but that we may make no a priori assumptions about the meaning of the word understand.

Every tool carries with it the spirit by which it has been created.

Many people will tell you that an expert is someone who knows a great deal about the subject. To this I would object that one can never know much about any subject. I would much prefer the following definition: an expert is someone who knows some of the worst mistakes that can be made in the subject, and how to avoid them.

The problems of language here are really serious. We wish to speak in some way about the structure of the atoms. But we cannot speak about atoms in ordinary language.

My mind was formed by studying philosophy, Plato and that sort of thing.

A consistent pursuit of classical physics forces a transformation in the very heart of that physics.