Ralph: When's Bart coming back?
Lisa: He's not. He thought he was better than the laws of probability. Anyone else think he's better than the laws of probability?
(Nelson raises his hand.)
Lisa: Well, you're not!
— The Simpsons, Season 22, Episode 3, "MoneyBART"
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.