Just when I thought there wasn't room enough for another thought in my head, I had this great idea.

Study without desire spoils the memory, and it retains nothing that it takes in.

If you can't explain it simply, you don't understand it well enough.

My weapon is literature

The highest result of education is tolerance.

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

Industrialize or perish.

One test of the correctness of educational procedure is the happiness of the child.

If you're teaching today what you were teaching five years ago, either the field is dead or you are.

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

You can never learn less, you can only learn more.

The more I read, the more I acquire, the more certain I am that I know nothing.

Educate the children and it won't be necessary to punish the men.

The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.

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

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

Don't worry that children never listen to you; worry that they are always watching you.

I decided to teach because I think that any person who studies philosophy has to be involved actively.

Books are as useful to a stupid person as a mirror is useful to a blind person.

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

I like poems you can tack all over with a hammer and there are no hollow places.