In mathematics you don't understand things. You just get used to them.
A child educated only at school is an uneducated child.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
Education is a system of imposed ignorance.
Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.
Words can be like X-rays if you use them properly - they'll go through anything. You read and you?re pierced.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.
Don't worry that children never listen to you; worry that they are always watching you.
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.
Those who fail to learn the lessons of history are doomed to repeat them.
Courage, conviction and confidence.
It took us three years to build the NeXT computer. If we'd given customers what they said they wanted, we'd have built a computer they'd have been happy with a year after we spoke to them - not something they'd want now.
The most important part of teaching is to teach what it is to know.
One test of the correctness of educational procedure is the happiness of the child.
Knowing is not enough; we must apply. Willing is not enough; we must do.
The whole of science is nothing more than a refinement of everyday thinking.
You can never be overdressed or overeducated.
No man's knowledge here can go beyond his experience.
I am indebted to my father for living, but to my teacher for living well.
Reading is to the mind what exercise is to the body.