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

A cynic is a man who knows the price of everything, and the value of nothing.

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

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.

Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.

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

Dare to think for yourself.

To educate a person in the mind but not in morals is to educate a menace to society.

A child educated only at school is an uneducated child.

When you know better you do better.

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

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

Science is a way of thinking much more than it is a body of knowledge.

The progressive development of man is vitally dependent on invention.

What sculpture is to a block of marble, education is to a human soul.

The task of a writer is not to solve the problem but to state the problem correctly.

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.

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

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

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