The birth of Apollo from Isis and Osiris, while these gods were still in the womb of Rhea, has the allegorical meaning that before this world was made visible and its rough material was completely formed by reason, it was put to the test by Nature and brought forth of itself the first creation imperfect. This is the reason why they say that this god was born in the darkness a cripple, and they call him the elder Horus; for there was then no world, but only an image and outline of a world to be.