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

The most important part of teaching is to teach what it is to know.

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

Any sufficiently advanced technology is indistinguishable from magic.

As we acquire more knowledge, things do not become more comprehensible but more mysterious.

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

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

Science is what we have learned about how to keep from fooling ourselves.

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.

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

It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.

It is possible to fly without motors, but not without knowledge and skill.

Courage, conviction and confidence.

Don't learn to do, but learn in doing.

A thought is an idea in transit.

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

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

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

When you know better you do better.

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

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