Books are for people who wish they were somewhere else.

If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

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

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

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

If you're teaching today what you were teaching five years ago, either the field is dead or you are.

Educate the children and it won't be necessary to punish the men.

Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.

Learning never exhausts the mind.

A little knowledge that acts is worth infinitely more than much knowledge that is idle.

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

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

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

Free the child's potential, and you will transform him into the world.

Intelligence plus character-that is the goal of true education.

Industrialize or perish.

If the facts don't fit the theory, change the facts.

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

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

Any sufficiently advanced technology is indistinguishable from magic.

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.