Dear Posterity, If you have not become more just, more peaceful, and in general more sensible... then may the Devil take you!

People are like bicycles. They can keep their balance only as long as they keep moving.

... one does people the best service by giving them some elevating work to do and thus indirectly elevating them.

In my view, it is the most important function of art and science to awaken this feeling and keep it alive in those who are capable of it.

Nothing happens until something moves.

Scientists believe that every occurrence, including the affairs of human beings, is due to the laws of nature. Therefore a scientist cannot be inclined to believe that the course of events can be influenced by prayer, that is, by a supernaturally manifested wish.

Science is the attempt to make the chaotic diversity of our sense-experience correspond to a logically uniform system of thought.