They say, too, that the area of that ark could not contain so many kinds of animals of both sexes, two of the unclean and seven of the clean. But they seem to me to reckon only one area of 300 cubits long and 50 broad, and not to remember that there was another similar in the storey above, and yet another as large in the storey above that again; and that there was consequently an area of 900 cubits by 150. And if we accept what Origen[218] has with some appropriateness suggested, that Moses the man of God, being, as it is written, "learned in all the wisdom of the Egyptians,"[219] who delighted in geometry, may have meant geometrical cubits, of which they say that one is equal to six of our cubits, then who does not see what a capacity these dimensions give to the ark? For as to their objection that an ark of such size could not be built, it is a very silly calumny; for they are aware that huge cities have been built, and they should remember that the ark was an hundred years in building. Or, perhaps, though stone can adhere to stone when cemented with nothing but lime, so that a wall of several miles may be constructed, yet plank cannot be riveted to plank by mortices, bolts, nails, and pitch-glue, so as to construct an ark which was not made with curved ribs but straight timbers, which was not to be launched by its builders but to be lifted by the natural pressure of the water when it reached it, and which was to be preserved from shipwreck as it floated about rather by divine oversight than by human skill.
As to another customary inquiry of the scrupulous about the very minute creatures, not only such as mice and lizards, but also locusts, beetles, flies, fleas, and so forth, whether there were not in the ark a larger number of them than was determined by God in His command, those persons who are moved by this difficulty are to be reminded that the words "every creeping thing of the earth" only indicate that it was not needful to preserve in the ark the animals that can live in the water, whether the fishes that live submerged in it, or the sea-birds that swim on its surface. Then, when it is said "male and female," no doubt reference is made to the repairing of the races, and consequently there was no need for those creatures being in the ark which are born without the union of the sexes from inanimate things, or from their corruption; or if they were in the ark, they might be there as they commonly are in houses, not in any determinate numbers; or if it was necessary that there should be a definite number of all those animals that cannot naturally live in the water, that so the most sacred mystery which was being enacted might be bodied forth and perfectly figured in actual realities, still this was not the care of Noah or his sons, but of God. For Noah did not catch the animals and put them into the ark, but gave them entrance as they came seeking it. For this is the force of the words, "They shall come unto thee,"[1]--not, that is to say, by man's effort, but by God's will. But certainly we are not required to believe that those which have no sex also came; for it is expressly and definitely said, "They shall be male and female."[220] For there are some animals which are born out of corruption, but yet afterwards they themselves copulate and produce offspring, as flies; but others, which have no sex, like bees. Then, as to those animals which have sex, but without ability to propagate their kind, like mules and she-mules, it is probable that they were not in the ark, but that it was counted sufficient to preserve their parents, to wit, the horse and the ass; and this applies to all hybrids. Yet, if it was necessary for the completeness of the mystery, they were there; for even this species has "male and female."