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.

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

My weapon is literature

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

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

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

You can never learn less, you can only learn more.

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

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

In order to stave off covetouness, greed, and spite, citizens world over must be educated.

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

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

Any sufficiently advanced technology is indistinguishable from magic.

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

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

It is beyond a doubt that all our knowledge begins with experience.

The progressive development of man is vitally dependent on invention.

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

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.

There is one quality which one must possess to win, and that is definiteness of purpose, the knowledge of what one wants, and a burning desire to possess it.

To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.