I like poems you can tack all over with a hammer and there are no hollow places.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.
Books are as useful to a stupid person as a mirror is useful to a blind person.
The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.
Investigate, educate and organize.
Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.
The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.
A cynic is a man who knows the price of everything, and the value of nothing.
Evil being the root of mystery, pain is the root of knowledge.
The first principle is that you must not fool yourself and you are the easiest person to fool.
If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.
If you can't explain it simply, you don't understand it well enough.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.
Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.
Liberty without Learning is always in peril and Learning without Liberty is always in vain.
What is now proved was once only imagined.
Knowledge becomes evil if the aim be not virtuous.
Seek knowledge from the cradle to the grave.
If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.
What we know is a drop, what we don't know is an ocean.
Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.