Investigate, educate and organize.
In mathematics you don't understand things. You just get used to them.
The only true wisdom is in knowing you know nothing.
The most savage controversies are those about matters as to which there is no good evidence either way.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.
The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.
Study without desire spoils the memory, and it retains nothing that it takes in.
All stable processes we shall predict. All unstable processes we shall control.
Reading without reflecting is like eating without digesting.
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.
Books are as useful to a stupid person as a mirror is useful to a blind person.
The highest result of education is tolerance.
Those who fail to learn the lessons of history are doomed to repeat them.
The first principle is that you must not fool yourself and you are the easiest person to fool.
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.
Knowing is not enough; we must apply. Willing is not enough; we must do.
If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.
A cynic is a man who knows the price of everything, and the value of nothing.
God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.