222 THE NATURE OF THE GODS.sence preside over the world, and gives it those faculties by which, with certain revolutions, he may govern and preserve the motion of it. Then he asserts the heat of the firmament to be God ; not perceiving the firmament to be part of the world, which in another place he had described as God. How can that divine sense of the firmament be preserved in so rapid a motion? And where do the mul titude of Gods dwell, if heaven itself is a Deity? But when this philosopher says that God is without a body, he makes him an irrational and insensible being. Besides, how can the world move itself, if it wants a body ? Or how, if it is in perpetual self-motion, can it be easy and happy ? Xeriocrates, his fellow-pnpil, does not appear much wiser on this head, for in his books concerning the nature of the Gods no divine form is described ; but he says the num ber of them is eight. Five are moving planets ;* the sixth is contained in all the fixed stars ; which, dispersed, are so many several members, but, considered together, are one single Deity ; the seventh is the sun ; and the eighth the moon. But in what sense they can possibly be happy is not easy to be understood. From the same school of Plato, Heraclides of Pontus stuffed his books with puerile tales. Sometimes he thinks the world a Deity, at other times the mind. He attributes divinity likewise to the wandei'ing stars. He deprives the Deity of sense, and makes his form mutable; and, in the same book again, he makes earth and heaven Deities. The unsteadiness of Theophrastus is equally intolerable. At one time he attributes a divine prerogative to the mind ; at another, to the firmament; at another, to the stars and celestial constellations. Nor is his disciple Strato, who is called the naturalist, any more worthy to be regarded ; for he thinks that the divine power is diffused through nature, which is the cause of birth, increase, and diminution, but that it has no sense nor form. XIV. Zeno (to come to your sect, Balbus) thinks the law of nature to be the divinity, and that it has the power

These five moving stars are Saturn, Jupiter, Mars, Mercury, and 

Venus. Their revolutions are considered in the next book.