“There is no hunting like the hunting of man, and those who have hunted armed men long enough and liked it, never care for anything else thereafter.”
Hemingway
Regarding learning ourselves, he points out that to the degree we condemn others and find evil in them, we are unconscious of the same thing in ourselves or at least to the potentiality of it. And by inference, the hunting of armed men and liking it is the finding of sadistic pleasure in committing suicide since we are the other.
The concept isn't new; it's ages-old. Still, in its modern application, as proposed here, a slight twist plunges to the core of how an authentic human family operates. For example, here is a fictive “case study.”