Book

 1 1|      genesis being a coming into existence, and destruction being the
 2 1|      which has already come into existence and has been completed by
 3 1|           tissues] may come into existence, the underlyingsubstance
 4 1|      which has already come into existence - that is to say, the solid
 5 1|         casesomething comes into existence which did not exist previously,
 6 1|       whichhas already come into existence. Therefore, the former kind
 7 1|     alone maintain a respectable existence still. Yet the tenetsof
 8 2| faculties necessary for its very existence, and, thereafter, gradually
 9 2|    fashioned by it may come into existence, it [the principle] must
10 2|          when it first came into existence, of what use would that
11 2|          to be still coming into existence [undergoing genesis] so
12 2|         know how bile comes into existence in the veins? Are we to
13 2|         the food, but comes into existence in the animal's body? Will
14 2|          beginning or comes into existence as a result of gastric digestion.
15 3|      previous book we proved the existence of the attractive, and,