Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.

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

The great difficulty in education is to get experience out of ideas.

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

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

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

Those who fail to learn the lessons of history are doomed to repeat them.

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

A child educated only at school is an uneducated child.

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.

What is freedom of expression? Without the freedom to offend, it ceases to exist.

If you can't explain it simply, you don't understand it well enough.

Reading without reflecting is like eating without digesting.

Real learning comes about when the competitive spirit has ceased.

Study without desire spoils the memory, and it retains nothing that it takes in.

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

There is no authority who decides what is a good idea.

You can never learn less, you can only learn more.

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

It isn't what we don't know that gives us trouble, it's what we know that ain't so.

A thought is an idea in transit.