Physics is like sex: sure, it may give some practical results, but that's not why we do it.

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

No power and no treasure can outweigh the extension of our knowledge.

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

The only true wisdom is in knowing you know nothing.

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

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

Better know nothing than half-know many things.

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

If I have seen further it is by standing on the shoulders of Giants.

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

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

If there were no bad people, there would be no good lawyers.

Free the child's potential, and you will transform him into the world.

Dare to think for yourself.

Common sense is the collection of prejudices acquired by age eighteen.

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

The most savage controversies are those about matters as to which there is no good evidence either way.

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

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

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