We include two essays which describe Thelema:
- The Law Of Thelema - An essay by Alexander Duncan
- Introduction To Thelema - An essay by the U.S. Grand Lodge of the Ordo Templi Orientis. "O.T.O." stands for Ordo Templi Orientis, the Order of Oriental Templars, or Order of the Temple of the East. "O.T.O. is an Outer Thelemic Order", and is the "first of the great Old Æon orders to accept The Book of the Law, received by Aleister Crowley in 1904 EV.