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

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

You can never be overdressed or overeducated.

If you can't explain it simply, you don't understand it well enough.

One test of the correctness of educational procedure is the happiness of the child.

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

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

God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.

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

To every action there is always an equal and opposite or contrary, reaction

There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.

Reading without reflecting is like eating without digesting.

Study without desire spoils the memory, and it retains nothing that it takes in.

Many much-learned men have no intelligence.

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

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

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

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

I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.

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

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