that are got on high, and are there securely seated, first go about as victors, crowned with garlands called the wings of constancy, because in their lives they restrained the unreasonable and passible part of their soul, rendering it subject and obedient to the curb of reason. Secondly, they are like to the rays of the sun in appearance, and like to fire in their soul, which is borne aloft by the clear air which is about the moon,—like fire here on the earth,—from which they gather strength and solidity, as iron and steel do by their being tempered and plunged in water. For that which was hitherto rare and loose is compacted and made firm, and becomes bright and transparent; so that it is nourished with the least exhalation in the world. And this is what Heraclitus meant, when he said that the souls in Pluto’s region have their smell exceeding quick. 29. Now they first see the moon’s greatness, beauty, and nature, which is not simple nor unmixed, but a composition as it were of earth and star. For as the earth mixed with wind and moisture becomes soft, and as the blood tempered with the flesh gives it sense; so they say that the moon, being mingled with an ethereal quintessence even to the very bottom, is animated, becomes fruitful, and generative, and is equally counterpoised with ponderosity and lightness. For even the world itself, being composed of some things naturally moving upwards and others by nature tending downwards, is exempt from all local motion or change of place. These things also Xenocrates seems by a certain divine reasoning to have understood, having taken his first light from Plato. For Plato it was who first affirmed that every star is compounded of fire and earth, by the means of certain intermediate natures given in proportion; forasmuch as nothing can be an object of human sense which has not in some proportion a mixture of earth and light. Now Xenocrates says that the stars and the sun are composed of fire and the first or primitive solid; the moon of the second solid and its own peculiar air; and the earth, of water, fire, and the third solid. For neither is the solid alone by itself, nor the rare alone by itself, capable or susceptible of a soul. And let thus much suffice for the substance of the moon.