RIP Freeman Dyson

There is a great satisfaction in building good tools for other people to use.

-- Freeman John Dyson (15 December 1923 - 28 February 2020), English-born American physicist, mathematician, and futurist, famous for his work in quantum mechanics, nuclear weapons design and policy, and the search for extraterrestrial intelligence; winner of the Templeton Prize in the year 2000; Disturbing the Universe (1979)