Book, Paragraph

1      I,  21| proceed to infinity either by ascending from the ultimate term (
2      I,  21|       Consequently, since the ascending series is finite, the descent
3      I,  22|      predications neither the ascending predicates nor the descending
4      I,  22|  impossibility of an infinite ascending series-every predication
5      I,  22| assumptions then, neither the ascending nor the descending series
6      I,  22|       in number, while in the ascending series are contained those
7      I,  22| inhere in a single thing, the ascending series is equally finite.
8      I,  22|       cannot be infinite, the ascending series will terminate, and
9      I,  22|     is impossible if both the ascending and descending series of