All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.
What is now proved was once only imagined.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
Education is the most powerful weapon which you can use to change the world.
Education is our passport to the future, for tomorrow belongs to the people who prepare for it today.
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.
Free the child's potential, and you will transform him into the world.
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.
The ability to observe without evaluating is the highest form of intelligence.
Courage, conviction and confidence.
Reading without reflecting is like eating without digesting.
The whole of science is nothing more than a refinement of everyday thinking.
A thought is an idea in transit.
If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.
I decided to teach because I think that any person who studies philosophy has to be involved actively.
Educate the children and it won't be necessary to punish the men.
There is nothing more awful, insulting, and depressing than banality.
The progressive development of man is vitally dependent on invention.
If there were no bad people, there would be no good lawyers.
Education is the kindling of a flame, not the filling of a vessel.