It isn't what we don't know that gives us trouble, it's what we know that ain't so.
Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.
Opinion is the medium between knowledge and ignorance.
A child educated only at school is an uneducated child.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.
It is what you read when you don't have to that determines what you will be when you can't help it.
A thought is an idea in transit.
Books are for people who wish they were somewhere else.
The more I read, the more I acquire, the more certain I am that I know nothing.
What sculpture is to a block of marble, education is to a human soul.
Courage, conviction and confidence.
Science is what we have learned about how to keep from fooling ourselves.
There is nothing more awful, insulting, and depressing than banality.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.
If the facts don't fit the theory, change the facts.
Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.
I am a part of everything that I have read.
To educate a person in the mind but not in morals is to educate a menace to society.
The man who does not read good books has no advantage over the man who can't read them.
I don't look on poetry as closed works. I feel they're going on all the time in my head and I occasionally snip off a length.