If at first the idea is not absurd, then there is no hope for it.

The ideals which have always shone before me and filled me with the joy of living are goodness, beauty, and truth. To make a goal of comfort or happiness has never appealed to me; a system of ethics built on this basis would be sufficient only for a herd of cattle.

Genius is making complex ideas simple, not making simple ideas complex

Marie Curie is, of all celebrated beings, the only one whom fame has not corrupted.

A table, a chair, a bowl of fruit and a violin; what else does a man need to be happy.

I do not believe that civilization will be wiped out in a war fought with the atomic bomb. Perhaps two-thirds of the people of the earth will be killed.

Galileo had already made a significant beginning toward a knowledge of the law of motion. He discovered the law of inertia and the law of bodies falling freely in the gravitational field of the earth.