And from that is the secret of eternity in the causes from Chapter 48. If it were a cause, its effect would precede it in existence and it was delayed, so the preceding and posterior noun are established. If it required the existence of the world for its own sake, none of its created things would be delayed from it, and if it were not valid for it to originate from it except one, then the lineage and evidence from it would be invalid. He gave the emanating, along with its oneness, a lineage. He established rulings and lineage, and the emanating is a known existence, and lineage is a non-existent matter, and non-existence does not establish existence, for proofs invalidate it, and limits and multiplicity are intelligible, and there is no cause except that it is an effect.