[Baldbvrhunter]

A pet peeve of mine is

> some spicy quote -- author

and when you go look, it is quoting something a character said in a story

an example [0]

> “The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man.” - George Bernard Shaw

But it is part of a speech in "Man and Superman," by the protagonist, John Tanner.

(although Shaw is known for expressing his views through his character, it's just one I could find)

[0] https://unearnedwisdom.com/the-reasonable-man-adapts-himself...