She held out her hand, like a man. He hesitated, then took the hand and shook it. It was very warm. You could not help but be aware of the wild passage of blood on the other side of its wall, veins, capillaries, sweat glands, tiny factories in the throes of complicated manufacture. [He] looked at the eyes and, knowing how eyes worked, was astonished, not for the first time, at the infinite complexity of Creation, wondering how this thing, this instrument for seeing, could transmit so clearly its entreaty while at the same time—-Look, I am only an eye—-denying that it was doing anything of the sort.