Those who fail to learn the lessons of history are doomed to repeat them.
A cynic is a man who knows the price of everything, and the value of nothing.
Investigate, educate and organize.
Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.
It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
Courage, conviction and confidence.
Opinion is the medium between knowledge and ignorance.
If I have seen further it is by standing on the shoulders of Giants.
Real learning comes about when the competitive spirit has ceased.
He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.
Just because I don't care doesn't mean I don't understand.
Intelligence plus character-that is the goal of true education.
With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.
The most important part of teaching is to teach what it is to know.
Know what you are talking about.
I cannot live without books.
It is what you read when you don't have to that determines what you will be when you can't help it.