According to a story, the logician Sidney Morgenbesser and his girlfriend underwent couples counseling during which the bickering pair endlessly aired their grievances about each other. The exasperated counselor finally said to them, “Look, someone’s got to change.” Morgenbesser replied, “Well, I’m not going to change. And she’s not going to change. So you’re going to change.”

Steven Pinker, Rationality: What It Is, Why It Seems Scarce, Why It Matters, New York, 2021, p. 81