[Footnote 9: Two learned critics, Beausobre (Hist. Critique
du Manicheisme, l. i. iv. v. vi.) and Mosheim, (Institut.
Hist. Eccles. and de Rebus Christianis ante Constantinum,
sec. i. ii. iii.,) have labored to explore and discriminate
the various systems of the Gnostics on the subject of the
two principles.]