1911 Encyclopædia Britannica, Volume 13… (1911)
“ The worship of these heroes is in reality an ancestor worship, which existed in pre-Homeric times, and was preserved in local cults. Instances no doubt occur of gods being degraded to the ranks of heroes, but these are not the real heroes, the heroes who are the object of a cult. The cult-heroes were all persons who had lived the life of man on earth, and it was necessary for the degraded gods to pass through this stage. They did not at once become cult-heroes, but only after they had undergone death like other mortals. Only one who has been a man can become a hero. ”
