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

Don't worry that children never listen to you; worry that they are always watching you.

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

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

It is possible to fly without motors, but not without knowledge and skill.

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

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

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.

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

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

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

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

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

Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.

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

It is better to know how to learn than to know.

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

When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.

My weapon is literature

Opinion is the medium between knowledge and ignorance.

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