Knowledge becomes evil if the aim be not virtuous.

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.

No man's knowledge here can go beyond his experience.

The deepest sin against the human mind is to believe things without evidence.

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

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

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

The direction in which education starts a man will determine his future in life

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

I cannot live without books.

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

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

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

In mathematics you don't understand things. You just get used to them.

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

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.

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

I learned very early the difference between knowing the name of something and knowing something.

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

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

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