If they want to see me, here I am. If they want to see my clothes, open my closet and show them my suits.

Science is the century-old endeavor to bring together by means of systematic thought the perceptible phenomena of this world into as thorough-going an association as possible.

Time has no independent existence apart from the order of events by which we measure it.

Out yonder there was this huge world...which stands before us like a great eternal riddle.

Nothing that I can do or say will change the structure of the universe. But maybe, by raising my voice, I can help the greatest of all causes — good will among men and peace on earth.

Nature shows us only the tail of the lion. But there is no doubt in my mind that the lion belongs with it even if he cannot reveal himself to the eye all at once because of his huge dimension.

My success wasn't so much due to intelligence, but the fact that I stuck with problems longer.