|Catholic Encyclopedia: Gnosticism|
Gnosticism , as a syncretistic , dualistic system has been historically regarded by orthodox christians as a heresy.
|Definition of Gnosticism|
Gnosticism died not by chance , but because it lacked vital power within itself; and no amount of theosophistic literature can give life to that which perished from intrinsic and essential defects.
|Medieval Sourcebook: Bernard Gui on the Albigensians|
Offers an account of a catholic inquisitor on the cathar faith.
|Strange Fire: Rise of Gnosticism in the Church|
Book by travers and jewel van der merwe offering a christian view of ancient and neo-gnostic beliefs.