Again, there is this assertion made by some of those who diligently employ themselves in investigating truth which appears to me to be a sufficiently felicitous one; if the world is destroyed it will either be destroyed by some other efficient cause, or by God; now there is certainly nothing else whatever from which it can receive its destruction, for there is nothing whatever which it does not surround and contain; but that which is surrounded and confined within something else is manifestly inferior in power to that which surrounds and confines it, by which it is therefore mastered; on the other hand, to say that it is destroyed by God is the most impious of all possible assertions; for God is the cause not of disorder, and irregularity, and destruction, but of order, and beautiful regularity, and life, and of every good thing, as is confessed by all those whose opinions are based on truth.
 But a person may very likely wonder at those who talk about conflagrations and regenerations, not only on account of the arguments which I have just been adducing, by which they are convicted of maintaining erroneous opinions, but also above all other reasons for this one; for since there are four elements of which the world consists, namely, earth, water, air, and fire, why is it that they are to separate fire from all the others, and to affirm that all the others are dissolved into that one? For some one may say, if it is necessary that they should all be resolved into one, why
 
should they not be resolved into air, or water, or earth? For these elements also contain powers of great magnitude; but yet no one has ever said that the world was to pass away into air, or into water, or into earth; so that it would be equally natural to deny that it is resolved into fire.
 Moreover, it would have become them, perceiving the beautiful equality which exists in the world, to fear and to feel too great awe to venture to condemn so divine a thing to death; for there is a most admirable system of compensation existing in the four elements which arrange and dispense their vicissitudes by the rules of equality, and the definitions of justice; for as the seasons of the year, in their proper alternations of revolutions, go through their regular cycle, completing their periodical changes without any cessation; in the same manner suppose that the elements of the world in the course of their continual interchanges with one another (though it is a most paradoxical assertion), when they appear to be perishing are in reality being made immortal, passing over the same course again and again, so as to have their existence infinitely protracted.
 Therefore the steep road begins with the earth; for when it is wasted away it endures a change to water, and the water when it has evaporated is changed into air, and the air when rarefied is changed into fire; but the downward road descends from the head, when the fire in consequence of the conflagration which ensues settles down into air, and again when the air being closely pressed settles down into water, and when the water by its copious effusion is condensed so as to be changed into earth.