A man must learn to understand the motives of human beings, their illusions, and their sufferings.

Be a loner. That gives you time to wonder, to search for the truth. Have holy curiosity. Make your life worth living.

Conviction is a good motive, but a bad judge.

I never commit to memory anything that can easily be looked up in a book

It is a very grave mistake to think that the enjoyment of seeing and searching can be promoted by means of coercion and a sense of duty.

Growth comes through analogy; through seeing how things connect, rather than only seeing how they might be different.

Engineering is not only study of 45 subjects but it is moral studies of intellectual life. Make things as simple as possible..but not simpler.