A late entry, but a goodie. From a reader:

Jonah,
Not sure if you got this already. Spoken by William Holden, in the movie
“Born Yesterday” in 1950.
“The whole history of the world is the story of the struggle between the
selfish and the unselfish. All that’s bad around us is bred by
selfishness. Sometimes selfishness is a cause, an organized force, even
a government, and then it’s called fascism.”