The value of a man should be seen in what he gives and not in what he is able to receive.
The whole of science is nothing more than a refinement of everyday thinking.
The world is a dangerous place to live; not because of the people who are evil, but because of the people who don't do anything about it.
There are two ways to live: you can live as if nothing is a miracle; you can live as if everything is a miracle.
There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.
There could be no fairer destiny for any physical theory than that it should point the way to a more comprehensive theory in which it lives on as a limiting case.
The unleashed power of the atom has changed everything save our modes of thinking and we thus drift toward unparalleled catastrophe.
The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one.
Time is what prevents everything from happening at once.
There is no logical way to the discovery of these elemental laws. There is only the way of intuition, which is helped by a feeling for the order lying behind the appearance.
The true sign of intelligence is not knowledge but imagination.
To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science.
The road to perdition has ever been accompanied by lip service to an ideal.
Try not to become a man of success, but rather try to become a man of value.
The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.