This essay provides basic exposition of GC II 11; for though the upshot of this difficult chapter is by and large clear, the argumentative details are often hard to make out. The question of the chapter is whether there is anything that comes to be of necessity; its answer, briefly put, is that there would be if there were anything whose coming to be was everlasting, which there would be if there were anything whose coming to be was cyclical, which in point of fact there is (e.g., solstices). The argument fails, of course; the reason, I suggest, is that it does not follow, from the fact that (say) solstices come to be cyclically, that they are always in process of coming to be.