The books that the world calls immoral are books that show the world its own shame.

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

I learned very early the difference between knowing the name of something and knowing something.

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.

What we know is a drop, what we don't know is an ocean.

I don't look on poetry as closed works. I feel they're going on all the time in my head and I occasionally snip off a length.

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.

Knowledge becomes evil if the aim be not virtuous.

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

The only good is knowledge and the only evil is ignorance.

An investment in knowledge pays the best interest.

A witty saying proves nothing.

Knowing others is wisdom, knowing yourself is Enlightenment.

Education is the kindling of a flame, not the filling of a vessel.

I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.

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

Necessity is the mother of invention.

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

Better know nothing than half-know many things.

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

Know what you are talking about.