It isn't what we don't know that gives us trouble, it's what we know that ain't so.

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

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

Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is the most important.

Education is a system of imposed ignorance.

A child miseducated is a child lost.

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

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

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.

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

My weapon is literature

Just when I thought there wasn't room enough for another thought in my head, I had this great idea.

When you know better you do better.

All stable processes we shall predict. All unstable processes we shall control.

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

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

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.

Knowing is not enough; we must apply. Willing is not enough; we must do.

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

Necessity is the mother of invention.

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