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

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

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.

Human behavior flows from three main sources: desire, emotion, and knowledge

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

A little knowledge that acts is worth infinitely more than much knowledge that is idle.

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

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

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.

Books are for people who wish they were somewhere else.

I cannot teach anybody anything. I can only make them think

I think that kids have a greater capacity for processing things than we give them credit for.

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

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

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

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

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

Knowing others is wisdom, knowing yourself is Enlightenment.

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.

All stable processes we shall predict. All unstable processes we shall control.