In the first place, then, said I, the considerations that prevent our making an infinite number of worlds do not preclude our making more than one. For it is possible for God and prophecy and Providence to exist in more worlds than one, and for the incidence of chance to be reduced to the very smallest limits, while the vast majority of things and those of the highest importance attain to genesis and transmutation in a quite orderly sequence, none of which things does infinity, by its nature, admit. Then again it is more consistent with reason that the world should not be the only-begotten of God and quite alone. For He, being consummately good, is lacking in none of the virtues, and least of all in those which concern justice and friendliness; for these are the fairest and are fitting for gods. Nor is it in the nature of God to possess anything to no purpose or for no use. Therefore there exist other gods and other worlds outside, in relation with which He exercises the social virtues. For not in relation with Himself nor with any part of Himself is there any exercise of justice or benevolence or kindness, but only in relation with others. Thus it is not likely that this world, friendless, neighbourless, and unvisited, swings back and forth in the infinite void, since we see that Nature includes individual things in classes and species, like seeds in pods and envelopes. For there is nothing in the whole list of existing things for which there is not some general designation, nor does anything that does not possess certain qualities, either in common with others or solely by itself, obtain such an appellation. Now the world is not spoken of as having qualities in common with others. It has its qualities, therefore, solely by itself, by virtue of the difference when it is compared with other things which are akin to it and similar in appearance, since it has been created with such qualities as it possesses. If in all creation such a thing as one man, one horse, one star, one god, one demigod does not exist, what is there to prevent creation from having, not one world, but more than one? For he who says that creation has but one land and one sea overlooks a matter which is perfectly plain, the doctrine of similar parts ; for we divide the earth into parts which bear similar names, and the sea likewise. A part of the world, however, is not a world, but something combined from the differing elements in Nature. Again, as for the dread which some people especially have felt, and so use up the whole of matter on the one world, so that nothing may be left over outside to disturb the structure of it by resisting or striking it—this fear of theirs is unwarranted. For if there are more worlds than one, and each of them has received, as its meet portion, substance and matter having a restricted measure and limit, then there will be nothing left unplaced or unorganized, an unused remnant, as it were, to crash into them from the outside. For the law of reason over each world, having control over the matter assigned to each, will not allow anything to be carried away from it nor to wander about and crash into another world, nor anything from another world to crash into it, because Nature has neither unlimited and infinite magnitude nor irrational and disorganized movement. Even if any emanation is carried from some worlds to others, it is certain to be congenial, agreeable, and to unite peaceably with all, like the rays of starlight and their blending; and the worlds themselves must experience joy in gazing at one another with kindly eyes; and for the many good gods in each, they must provide opportunities for visits and a friendly welcome. Truly in all this there is nothing impossible or fabulous or contrary to reason unless, indeed, because of Aristotle’s Cf. Aristotle, De Caelo , i. 7 (276 a 18). statements some persons shall look upon it with suspicion as being based on physical grounds. For if each of the bodies has its own particular place, as he asserts, the earth must of necessity turn toward the centre from all directions and the water be above it, settling below the lighter elements because of its weight. If, therefore, there be more worlds than one, it will come to pass that in many places the earth will rest above the fire and the air, and in many places below them; and the air and the water likewise, in some places existing in positions in keeping with nature and in other places in positions contrary to nature. As this, in his opinion, is impossible, the inference is that there are neither two worlds nor more, but only this one, composed of the whole of matter and resting firmly in keeping with Nature, as befits the diversity of its bodies.