Sex is engaging in the first rounds. What sustains interest in the long run is political power.
Notes from Wikiquote
"Suicide of Jiang Qing, Mao's Widow, Is Reported" in The New York Times (5 June 1991)
Quote text and notes from Wikiquote: Jiang Qing (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.