In Einstein's theory of relativity the observer is a man who sets out in quest of truth armed with a measuring-rod. In quantum theory he sets out with a sieve.

Philosophically, the notion of a beginning of the present order of Nature is repugnant to me ... I should like to find a genuine loophole.

What is possible in the Cavendish Laboratory may not be too difficult in the sun.

What we makes of the world must be largely dependent on the sense-organs that we happen to possess. How the world must have changed since the man came to rely on his eyes rather than his nose.

Shuffling is the only thing which Nature cannot undo.

Don't believe the results of experiments until they're confirmed by theory.

Events do not happen; they are just there, and we come across them.