Answer.—Each one of the luminous bodies in this limitless
firmament has a cycle of revolution which is of a different
duration, and every one revolves in its own orbit,
and again begins a new cycle. So the earth, every three
hundred and sixty-five days, five hours, forty-eight minutes
and a fraction, completes a revolution; and then it begins
a new cycle—that is to say, the first cycle is again renewed.
In the same way, for the whole universe, whether
for the heavens or for men, there are cycles of great events,
of important facts and occurrences. When a cycle is
ended, a new cycle begins; and the old one, on account of
the great events which take place, is completely forgotten,
and not a trace or record of it will remain. As you see, we
have no records of twenty thousand years ago, although
we have before proved by argument that life on this earth
is very ancient. It is not one hundred thousand, or two
hundred thousand, or one million or two million years old;
it is very ancient, and the ancient records and traces are
entirely obliterated.