15. The above considerations suffice for things studied each in itself.
The mutual relation, however, between things already begotten, and
those that are still being begotten from time to time, deserves to
attract attention, and may give rise to some objections, such as the
following: How does it happen that animals devour each other, that
men attack each other mutually, and that they are always in ceaseless
internecine warfare?[62] How could the reason (of the universe) have
constituted such a state of affairs, while still claiming that all is
for the best?