It is a paradoxical but profoundly true and important principle of life that the most likely way to reach a goal is to be aiming not at that goal itself but at some more ambitious goal beyond it.
My friends are my estate.
Human beings have an inalienable right to invent themselves.
The strongest possible piece of advice I would give any young woman is: Don't screw around, and don't smoke.
If you would thoroughly know anything, teach it to others.
Books...are like lobster shells, we surround ourselves with 'em, then we grow out of 'em and leave 'em behind, as evidence of our earlier stages of development.
The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one.