“Then among the various Divine measures undertaken, there followed HIS Decree, to choose the very best planet in the whole of our Great Megalocosmos, specially to arrange its surface, and to leave it for the free further existence of these higher being-bodies who were perfected in Reason, so that in this way they might receive all the possibilities for SELF-PURIFICATION from the undesirable elements which were in their presences. BTG XXXIX