[Okay, I confess I've lost track of the discrepancy between the chapters in the different editions, so I'll be going with the Walsh edition for the remainder of this Book]
Some philosophers argue for an eternal cycle, and while this is true to an extent, it is not the whole truth. We do see in the events of this world (both natural and historical) a sort-of cycle, in which similar events happen, similar creatures are born in nature, and similar personalities develop, and so on. Yet, we also see that there is a transcendent realm in which there is no repetition, and those of us who (through Christ) are lifted up to it are raised above this cycle of death in the world into something lasting and permanent. So however much there may appear to be cycles in this world, it is never more than an appearance of the truth.
Besides, we as believers know that the human race had an origin and beginning, and that we are not eternal creatures going on forever in an endless loop. So much Scripture tells us.