But in the human body there is ample space in this part; moreover, the heart and neighbouring organs require protection, and for these reasons this part is fleshy and the breasts are placed upon it separately, being themselves of a fleshy substance in the male for the reason just stated; while in the female, nature, in accordance with what we say is her frequent practice, makes them minister to an additional function, employing them as a store place of nutriment for the offspring.