Those who fail to learn the lessons of history are doomed to repeat them.
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
Books are as useful to a stupid person as a mirror is useful to a blind person.
If you can't explain it simply, you don't understand it well enough.
One test of the correctness of educational procedure is the happiness of the child.
If one cannot enjoy reading a book over and over again, there is no use in reading it at all.
In order to stave off covetouness, greed, and spite, citizens world over must be educated.
Knowing is not enough; we must apply. Willing is not enough; we must do.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
The direction in which education starts a man will determine his future in life
If you're teaching today what you were teaching five years ago, either the field is dead or you are.
Science is a way of thinking much more than it is a body of knowledge.
The more I read, the more I acquire, the more certain I am that I know nothing.
Just because I don't care doesn't mean I don't understand.
Know what you are talking about.
If the facts don't fit the theory, change the facts.
Education is the most powerful weapon which you can use to change the world.
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.
The deepest sin against the human mind is to believe things without evidence.
Don't learn to do, but learn in doing.
All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.