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

The most important part of teaching is to teach what it is to know.

Learning never exhausts the mind.

Science is not only a disciple of reason but, also, one of romance and passion.

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

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

Education is a system of imposed ignorance.

My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.

Opinion is the medium between knowledge and ignorance.

I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.

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

As we acquire more knowledge, things do not become more comprehensible but more mysterious.

The only true wisdom is in knowing you know nothing.

I am a part of everything that I have read.

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

A thought is an idea in transit.

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

The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.

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.

Make it a rule never to give a child a book you would not read yourself.

Don't learn to do, but learn in doing.