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

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

It is what you read when you don't have to that determines what you will be when you can't help it.

Words can be like X-rays if you use them properly - they'll go through anything. You read and you?re pierced.

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

To every action there is always an equal and opposite or contrary, reaction

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

My weapon is literature

Know what you are talking about.

What is now proved was once only imagined.

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

I am so clever that sometimes I don't understand a single word of what I am saying.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

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.

Dare to think for yourself.

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

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

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.

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

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

The ability to observe without evaluating is the highest form of intelligence.