Liberty without Learning is always in peril and Learning without Liberty is always in vain.
The great difficulty in education is to get experience out of ideas.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
The only true wisdom is in knowing you know nothing.
If you can't explain it simply, you don't understand it well enough.
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.
No man's knowledge here can go beyond his experience.
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.
An investment in knowledge pays the best interest.
Civilization is a race between disaster and education.
If I have seen further it is by standing on the shoulders of Giants.
The deepest sin against the human mind is to believe things without evidence.
A cynic is a man who knows the price of everything, and the value of nothing.
My weapon is literature
What is now proved was once only imagined.
I cannot live without books.
Books are as useful to a stupid person as a mirror is useful to a blind person.
I cannot teach anybody anything. I can only make them think
I like poems you can tack all over with a hammer and there are no hollow places.
Education is the best friend. An educated person is respected everywhere. Education beats the beauty and the youth.
The direction in which education starts a man will determine his future in life