Numerous variants of the Golden rule predate Christianity and there are few if any direct quotes of Jesus that survive. The gospels were written decades later. Oddly Jesus doesn't appear to have written or had someone record his wisdom directly, despite Aristotle setting an example with his 18 books of ethics over 300 years earlier.
I guess I led with the wrong thing. Mainly pointing out that they are not, in the strictest sense anyway, "directly quoted from Jesus" (and it kinda boggles my mind that he wouldn't have the foresight to write things down clearly to help keep things clear and consistent, which would not even have been unprecedented at the time)
