Opinion is the medium between knowledge and ignorance.

If the facts don't fit the theory, change the facts.

A child educated only at school is an uneducated child.

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

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

Dare to think for yourself.

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

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

The first idea the child must acquire is that of the difference between good and evil.

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

It took us three years to build the NeXT computer. If we'd given customers what they said they wanted, we'd have built a computer they'd have been happy with a year after we spoke to them - not something they'd want now.

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

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

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.

Free the child's potential, and you will transform him into the world.

Seek knowledge from the cradle to the grave.

Imagination is the source of every form of human achievement. And it's the one thing that I believe we are systematically jeopardizing in the way we educate our children and ourselves.

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.

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

Never help a child with a task at which he feels he can succeed.

There is nothing more awful, insulting, and depressing than banality.