If [quantum theory] is correct, it signifies the end of physics as a science.

I don't believe in mathematics.

Ever since childhood I have scorned the commonplace limits so often set upon human ambition. Possessions, outward success, publicity, luxury - to me these have always been contemptible. I believe that a simple and unassuming manner of life is best for everyone; best both for the body and the mind

Teaching should be such that what is offered is perceived as a valuable gift and not as hard duty. Never regard study as duty but as the enviable opportunity to learn to know the liberating influence of beauty in the realm of the spirit for your own personal joy and to the profit of the community to which your later work belongs.

A scientist is a mimosa when he himself has made a mistake, and a roaring lion when he discovers a mistake of others.

The most beautiful gift of nature is that it gives one pleasure to look around and try to comprehend what we see.

A single bomb of this type, carried by boat and exploded in a port, might very well destroy the whole port, together with some of the surrounding territory.