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

That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.

Know what you are talking about.

It is better to know how to learn than to know.

A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

The secret of life is not enjoyment but education through experience.

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

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

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

The progressive development of man is vitally dependent on invention.

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

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

Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is the most important.

Learning never exhausts the mind.

The white man is very clever. He came quietly and peaceably with his religion. We were amused at his foolishness and allowed him to stay. Now he has won our brothers, and our clan can no longer act like one. He has put a knife on the things that held us together and we have fallen apart.

If I have seen further it is by standing on the shoulders of Giants.

I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.

I do not know how to teach philosophy without becoming a disturber of the peace.

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

Education is the most powerful weapon which you can use to change the world.