Suddenly degrees aren't worth anything. Isn't that true? When I was a student, if you had a degree, you had a job. If you didn't have a job it's because you didn't want one. And I didn't want one, frankly.

Imagination is more important than knowledge.

The fullness of knowledge only comes through the awareness of ignorance.

An investment in knowledge pays the best interest.

You can never be overdressed or overeducated.

Opinion is the medium between knowledge and ignorance.

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.

Reading is to the mind what exercise is to the body.

We could never learn to be brave and patient, if there were only joy in the world

Most people have never learned that one of the main aims in life is to enjoy it.

The highest activity a human being can attain is learning for understanding, because to understand is to be free.

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

What is now proved was once only imagined.

The deepest sin against the human mind is to believe things without evidence.

The books that the world calls immoral are books that show the world its own shame.

I learned very early the difference between knowing the name of something and knowing something.

Science is what we have learned about how to keep from fooling ourselves.

My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.

Industrialize or perish.

No man's knowledge here can go beyond his experience.