[172] And every one of the seven outward senses is in one respect male, and in another, female. For when they are stationary, or when it is in motion, they are stationary while quiescent in sleep, and they are in motion while they are energising in their waking state; and the one in accordance with habit and tranquillity, as being subject to passion, is called the female; and the one which exists according to motion and energy, as one that is only conceived in action, is called the male.