This is on the principle of the Pythagorean Monad producing the Duad, which produces the Triad, the last again reproducing itself in incomputable hierarchical numbers. Thus, light and dark are the dual manifestations of that which is called at once absolute light and darkness; spirit and matter are the dual manifestations of the one life; the most fundamental duality being the alternation between manvantara and pralaya, which are aspects of the ever-productive ineffable source. Monistic and dualistic philosophies merely accentuate each its own side of the question, and in reality each view more or less implies the other. The Zoroastrian doctrine, for example, in its esoteric side recognized that dualism applies only to the planes of manifestation which flow forth from it.

This is on the principle of the Pythagorean Monad producing the Duad, which produces the Triad, the last again reproducing itself in incomputable hierarchical numbers. Thus, light and dark are the dual manifestations of that which is called at once absolute light and darkness; spirit and matter are the dual manifestations of the one life; the most fundamental duality being the alternation between manvantara and pralaya, which are aspects of the ever-productive ineffable source. Monistic and dualistic philosophies merely accentuate each its own side of the question, and in reality each view more or less implies the other. The Zoroastrian doctrine, for example, in its esoteric side recognized that dualism applies only to the planes of manifestation which flow forth from it.