Yet is not the nurse as important as the father, since without the benefits which I have received from each of them alike, I should have been alike unable to effect anything? If I owe all that I now can do to my original beginning, I cannot regard my father or my grandfather as being this original beginning; there always will be a spring further back, from which the spring next below is derived. Yet no one will argue that I owe more to unknown and forgotten ancestors than to my father; though really I do owe them more, if I owe it to my ancestors that my father begat me.