text: "You maintain, do you," says the objector, "that every living thing is at the start adapted to its constitution, but that man's constitution is a reasoning one, and hence man is adapted to himself not merely as a living, but as a reasoning, being? For man is dear to himself in respect of that wherein he is a man. How, then, can a child, being not yet gifted with reason, adapt himself to a reasoning constitution?" But each age has its own constitution, different in the case of the child, the boy, and the old man; they are all adapted to the constitution wherein they find themselves. The child is toothless, and he is fitted to this condition. Then his teeth grow, and he is fitted to that condition also. Vegetation also, which will develop into grain and fruits, has a special constitution when young and scarcely peeping over the tops of the furrows, another when it is strengthened and stands upon a stalk which is soft but strong enough to bear its weight, and still another when the colour changes to yellow, prophesies threshing-time, and hardens in the ear – no matter what may be the constitution into which the plant comes, it keeps it, and conforms thereto. The periods of infancy, boyhood, youth, and old age, are different; but I, who have been infant, boy, and youth, am still the same. Thus, although each has at different times a different constitution, the adaptation of each to its constitution is the same. For nature does not consign boyhood or youth, or old age, to me; it consigns me to them. Therefore, the child is adapted to that constitution which is his at the present moment of childhood, not to that which will be his in youth. For even if there is in store for him any higher phase into which he must be changed, the state in which he is born is also according to nature. First of all, the living being is adapted to itself, for there must be a pattern to which all other things may be referred. I seek pleasure; for whom? For myself. I am therefore looking out for myself. I shrink from pain; on behalf of whom? Myself. Therefore, I am looking out for myself. Since I gauge all my actions with reference to my own welfare, I am looking out for myself before all else. This quality exists in all living beings – not engrafted but inborn.