Book XII, 4

I delight in the prime of a boy of twelve, but one of thirteen is much more desirable. He who is fourteen is a still sweeter flower of the Loves, and one who is just beginning his fifteenth year is yet more delightful. The sixteenth year is that of the gods, and as for the seventeenth it is not for me, but for Zeus, to seek it. But if one has a desire for those still older, he no longer plays, but now seeks “ And answering him back.”