For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
Evil being the root of mystery, pain is the root of knowledge.
If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.
Reading without reflecting is like eating without digesting.
Education is the kindling of a flame, not the filling of a vessel.
If the facts don't fit the theory, change the facts.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
The whole of science is nothing more than a refinement of everyday thinking.
Common sense is the collection of prejudices acquired by age eighteen.
Dare to think for yourself.
When you know better you do better.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
If there were no bad people, there would be no good lawyers.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.
A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.
The first principle is that you must not fool yourself and you are the easiest person to fool.
One test of the correctness of educational procedure is the happiness of the child.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.
I have no special talents. I am only passionately curious.
If you want the present to be different from the past, study the past.