[On Richard P. Feynman's live demonstration of the rigidity of the O-rings when cold that doomed the space shuttle Challenger, killing seven astronauts:] The public saw with their own eyes how science is done, how a great scientist thinks with his hands, how nature gives a clear answer when a scientist asks her a clear question.
Freeman DysonThere is nothing so big nor so crazy that one out of a million technological societies may not feel itself driven to do, provided it is physically possible.
Freeman DysonWe won't really understand the brain until we can make models of it which are analog rather than digital, which nobody seems to be trying very much.
Freeman DysonThe average ground temperature of the Earth is impossible to measure since most of the Earth is ocean...So this average ground temperature is a fiction.
Freeman Dyson