Philo Judaeus De Decalogo 112

[112] For to whom else will those men do good who neglect their nearest relations and and those who have bestowed the greatest gifts upon them, some of which are of so great a character that they do not admit of any requital? For how can he who has been begotten by a parent, in requital again beget his parents, since nature has bestowed on parents this especial endowment in respect of their children, which can never be requited or recompensed? On which account it is becoming to a man to feel exceeding indignation when people, because they are unable to make a full return for the benefits which they have received, do not choose to make the very slightest;