"Fresco had a daughter AND a son, from a previous marriage. After the divorce, the mother kept both children from visiting Fresco until they were older. His son didn't really get a chance to know his father until the late 70's for a few brief visits to the Fresco home. His son had no inclinations of being a philosopher like his father, and was interested in joining the police force. Without warning, again "approximately" in the late 70's, maybe early 80's, his son shot himself (apparently over a discontinued relationship with a girlfriend). I met him, and he was a nice sort of fellow. I was sad to see him gone at such an early age (late teens, early 20's). I never met Fresco's daughter, she remained with her mother in those days."