The progressive development of man is vitally dependent on invention.

The highest result of education is tolerance.

The only true wisdom is in knowing you know nothing.

A little knowledge is a dangerous thing. So is a lot.

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

Don't learn to do, but learn in doing.

I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion

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

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

Learning never exhausts the mind.

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.

All stable processes we shall predict. All unstable processes we shall control.

Many much-learned men have no intelligence.

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

If there were no bad people, there would be no good lawyers.

To educate a person in the mind but not in morals is to educate a menace to society.

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

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

Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.

Dare to think for yourself.

When you know better you do better.