As we acquire more knowledge, things do not become more comprehensible but more mysterious.
The man who does not read good books has no advantage over the man who can't read them.
Knowledge becomes evil if the aim be not virtuous.
Dare to think for yourself.
A little knowledge is a dangerous thing. So is a lot.
A child educated only at school is an uneducated child.
If you can't explain it simply, you don't understand it well enough.
The real solution lies in a world in which charity will have become unnecessary.
The whole of science is nothing more than a refinement of everyday thinking.
Opinion is the medium between knowledge and ignorance.
The first principle is that you must not fool yourself and you are the easiest person to fool.
The man who is fond of books is usually a man of lofty thought, and elevated opinions.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
I cannot live without books.
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.
It is what you read when you don't have to that determines what you will be when you can't help it.
Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is the most important.
Science is what we have learned about how to keep from fooling ourselves.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
A thought is an idea in transit.
It is beyond a doubt that all our knowledge begins with experience.
