Kurt Vonnegut tells a story about Joseph Heller's lesson to him about greed.

[Swede]

I posted this once before, but it's always relevant, with you know who haunting the world right now.

“JOE HELLER

True story, Word of Honor: Joseph Heller, an important and funny writer now dead,
and I were at a party given by a billionaire on Shelter Island.

I said, “Joe, how does it make you feel to know that our host only yesterday
may have made more money than your novel ‘Catch-22’ has earned in its entire history?”
And Joe said, “I’ve got something he can never have.”
And I said, “What on earth could that be, Joe?”
And Joe said, “The knowledge that I’ve got enough.”
Not bad! Rest in peace!”
― Kurt Vonnegut

https://www.goodreads.com/quotes/7345831-joe-heller-true-story-word-of-honor-joseph-heller-an