“Because the son received life from his father, and had he not received it, he could not have returned any benefits at all.” A father has this in common with all those who have given any men their lives; it is impossible that these men could repay the debt if they had not received their life. Then I suppose one cannot overpay one’s debt to a physician, for a physician gives life as well as a father; or to a sailor who has saved us when shipwrecked? Yet the benefits bestowed by these and by all the others who give us life in whatever fashion, can be outdone: consequently those of our fathers can be outdone. If anyone bestows upon me a benefit which requires the help of benefits from many other persons, whereas I give him what requires no one to help it out, I have given more than I have received; now a father gave to his son a life which, without many accessories to preserve it, would perish; whereas a son, if he gives life to his father, gives him a life which requires no assistance to make it lasting; therefore the father who receives life from his son, receives a greater benefit than he himself bestowed upon his son.