And the face communicates direct with both planes of primary consciousness.

The moment a child is born, it begins to grope for the breast.

And suddenly a new great circuit is established, the four poles all working at once, as the child sucks.

There is the profound desirousness of the lower center of sympathy, and the superior avidity of the center of will, and at the same time, the cleaving yearning to the nipple, and the tiny curiosity of lips and gums.

The nipple of the mother's breast is one of the great gates of the body, hence of the living psyche.