The physicists have known sin; and this is a knowledge which they cannot lose.

If atomic bombs are to be added as new weapons to the arsenals of a warring world, or to the arsenals of nations preparing for war, then the time will come when mankind will curse the names of Los Alamos and Hiroshima. The people must unite or they will perish.

Access to the Vedas is the greatest privilege this century may claim over all previous centuries.

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

Pragmatism is an intellectually safe but ultimately sterile philosophy.

Science is not everything, but science is very beautiful.

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