Heroic Code Says the Younger Generation Is Inferior
In the Iliad‘s heroic world, the attribute of being superior to one’s father is very dangerous, associated above all with usurpation. Zeus, the king of gods, came to power by overthrowing his father, Kronos—as Kronos had overthrown his father before him. Among gods, a son greater in strength than his father, then, can, and usually does, overturn the cosmic order.
Among men, a central tenet of the heroic code is that the younger generation is inferior to the elder, or to the generation of its fathers. Old Nestor’s authority among the Achaeans rests exclusively upon the fact, which he never tires of proclaiming, that he belongs to the age of heroes of old: “‘I fought single-handed, yet against such men no one of the mortals now alive upon earth could do battle.'” In heroic society, a hero is cajoled, bullied, or persuaded into line by being reminded of the illustrious deeds his father committed. Deference to the tenet that the fathers of old are greater than the heroes of today is part of the moral cement that holds heroic society together.
— The War That Killed Achilles, p. 27