Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

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

Education is the ability to listen to almost anything without losing your temper or your self-confidence.

That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.

The man who is fond of books is usually a man of lofty thought, and elevated opinions.

The real solution lies in a world in which charity will have become unnecessary.

Many much-learned men have no intelligence.

Education is an ornament for the prosperous, a refuge for the unfortunate.

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.

If the facts don't fit the theory, change the facts.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.

If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.

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

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

We could never learn to be brave and patient, if there were only joy in the world

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

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

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

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