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.

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

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

Education is a human right with immense power to transform. On its foundation rest the cornerstones of freedom, democracy and sustainable human development.

Evil being the root of mystery, pain is the root of knowledge.

Investigate, educate and organize.

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

The highest result of education is tolerance.

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

Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.

Books are as useful to a stupid person as a mirror is useful to a blind person.

Suddenly degrees aren't worth anything. Isn't that true? When I was a student, if you had a degree, you had a job. If you didn't have a job it's because you didn't want one. And I didn't want one, frankly.

No man's knowledge here can go beyond his experience.

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

The first principle is that you must not fool yourself and you are the easiest person to fool.

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

I am indebted to my father for living, but to my teacher for living well.

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

Many much-learned men have no intelligence.

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.

I do not know how to teach philosophy without becoming a disturber of the peace.