We do not believe any group of men adequate enough or wise enough to operate without scrutiny or without criticism. We know that the only way to avoid error is to detect it, that the only way to detect it is to be free to enquire. We know that the wages of secrecy are corruption. We know that in secrecy error, undetected, will flourish and subvert.

"Encouragement of Science" (Address at Science Talent Institute, 6 Mar 1950), Bulletin of the Atomic Scientists, v.7, #1 (Jan 1951) p. 6-8