De Plantatione

For after the Creator of the world, reducing that substance, which was in its own nature destitute of order and regularity, into a state of order, and bringing it from a condition of confusion into a distinct system, began to fashion and shape it, he placed the earth and the water in the middle, and the plants of air and fire he drew up from their previously central position to a lofty eminence; and the aether he arranged all round, placing it as a boundary to and preservation of the things within, from which also it seems that the heaven [*](Οὐρανὸς, "heaven;" as if derived from ὅρος or οὖρος, "a boundary." ) derives its name, causing the earth to be borne upon the water in such a way that it continues dry, which, however, there was reason to fear might be dissolved by water; and this great worker of marvels, moreover, united the air, which was exceedingly [*](Genesis ix. 20. ) [*](Οὐρανὸς, "heaven;" as if derived from ὅρος or οὖρος, "a boundary." )

cold by its own nature, to fire which is very hot; a most surprising miracle.