Running bitcoin— Hal Finney, 2009-01-11(the tweet heard around the world — possibly the first person after Satoshi to run the software)
Digital cash has the property that when exponentiated it leads to a number most of whose bits are fixed but which has a small number of varying bits.— Hal Finney, 1994-03-16(from "The Beauty of ECash" — exploring the aesthetics of cryptographic mathematics)
No one has yet discovered any warlike purpose to be served by the theory of numbers or relativity, and it seems very unlikely that anyone will do so for many years.— G.H. Hardy, 1940(from A Mathematician's Apology (written before the atomic bomb and modern cryptography proved him spectacularly wrong))
Pure mathematics is, in its way, the poetry of logical ideas.— Albert Einstein, 1935
Euclid alone has looked on Beauty bare.— Edna St. Vincent Millay, 1923