When I think of the most able students I have encountered in my teaching - I mean those who have distinguished themselves not only by skill but by independence of thought - then I must confess that all have had a lively interest in epistemology.

That is the way to learn the most, that when you are doing something with such enjoyment that you don't notice that the time passes.

I always found I was in the best of company, alone.

It is humankind's duty to respect all life, not only animals have feelings but even also trees and plants.

One must console oneself with the thought that time has a sieve through which most of these important things run into the ocean of oblivion and what remains after this selection is often still trite and bad.

If I had an hour to solve a problem I'd spend 55 minutes thinking about the problem and 5 minutes thinking about solutions.

There is a driving force more powerful than steam, electricity and nuclear power: the will.