Our next task

is to study coming-to-be and passing-away. We are to distinguish the causes, and to state the definitions, of these processes considered in general—as changes predictable uniformly of all the things that come-to-be and pass-away by nature.

Further, we are to study growth and alteration. We must inquire what each of them is; and whether alteration is to be identified with coming-to-be, or whether to these different names there correspond two separate processes with distinct natures.