Philo Judaeus De Opificio Mundi 133

[133] Nor is what we are about to say inconsistent with what has been said; for nature has bestowed upon every mother, as a most indispensable part of her conformation, breasts gushing forth like fountains, having in this manner provided abundant food for the child that is to be born. And the earth also, as it seems, is a mother, from which consideration it occurred to the early ages to call her Demetra, combining the names of mother ( μήτηρ), and earth ( γῆ or δη). For it is not the earth which imitates the woman, as Plato has said, but the woman who has imitated the earth which the race of poets has been accustomed with truth to call the mother of all things, and the fruit-bearer, and the giver of all things, since she is at the same time the cause of the generation and durability of all things, to the animals and plants. Rightly, therefore, did nature bestow on the earth as the eldest and most fertile of mothers, streams of rivers, and fountains like breasts, in order that the plants might be watered, and that all living things might have abundant supplies of drink.