This was once the most obvious, most central, most agreed-upon notion in the history of political philosophy. Sure, Rousseau disagreed with it, but, hey, Rousseau was a putz. Boys need to be trained to be men and men need to be trained to be gentlemen. A Hobbesian world is one dominated by men who were never told to keep their elbows off the table. What's weird is that nobody really disputes this.
Feminists think boys are little monsters, and so do conservatives.
The only dispute is why and what to do about it. The why is actually settled science. But wait that sounds derogatory. Boys are more hyper, more competitive, more aggressive, more violent. These characteristics are hardwired.