The Confessions of Saint Augustine
The book starts off with his early childhood, where he reflects on the inherent violence of children, caused by original sin (chrisitan belief that man is sinful). There’s a parallel with other philosophies. Most philosophies/religions realize that on this basis, humans are flawed. These flaws seem to follow from how we evolved. And so a big part of what these philosophies try and solve is exactly how to overcome our basic urges.