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

All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.

Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.

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

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

No power and no treasure can outweigh the extension of our knowledge.

A little knowledge that acts is worth infinitely more than much knowledge that is idle.

The direction in which education starts a man will determine his future in life

The great difficulty in education is to get experience out of ideas.

It isn't what we don't know that gives us trouble, it's what we know that ain't so.

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.

If you want the present to be different from the past, study the past.

Imagination is more important than knowledge.

What is freedom of expression? Without the freedom to offend, it ceases to exist.

I have no special talents. I am only passionately curious.

The most important part of teaching is to teach what it is to know.

The task of a writer is not to solve the problem but to state the problem correctly.

Human behavior flows from three main sources: desire, emotion, and knowledge

What sculpture is to a block of marble, education is to a human soul.

Opinion is the medium between knowledge and ignorance.

An investment in knowledge pays the best interest.