'It worked.' (said after witnessing the first atomic detonation).

Both the man of science and the man of action live always at the edge of mystery, surrounded by it.

The general notions about human understanding...which are illustrated by discoveries in atomic physics are not in the nature of things wholly unfamiliar, wholly unheard of, or new. Even in our own culture, they have a history, and in Buddhist and Hindu thought a more considerable and central place. What we shall find is an exemplification, an encouragement, and a refinement of old wisdom.

Sometimes the answer to fear does not lie in trying to explain away the causes, sometimes the answer lies in courage.

Today, it is not only that our kings do not know mathematics, but our philosophers do not know mathematics and - to go a step further - our mathematicians do not know mathematics.

It is a profound and necessary truth that the deep things in science are not found because they are useful; they are found because it was possible to find them.

The open society, the unrestricted access to knowledge, the unplanned and uninhibited association of men for its furtherance-these are what may make a vast, complex, ever growing, ever changing, ever more specialized and expert technological world, nevertheless a world of human community.