“Whether and when the various Nations of the World can agree to stop the [development of nuclear weapons] is uncertain. But individual scientists can still influence this process by withholding their skills.”

“Accordingly, I call on all scientists in all countries to cease and desist from work creating, developing, improving and manufacturing further nuclear weapons.”

– Hans Albrecht Bethe On the 50th anniversary of Hiroshima in letter, Bulletin of the Atomic Scientists (Nov 1995), 51:6, p. 3.