Let the Magician therefore adventure himself upon the Astral Plane with the declared design to penetrate to a sanctuary of discarnate Beings such as are able to instruct and fortify him, also to prove their identity by testimony beyond rebuttal. All explanations other than these are of value only as extending and equilibrating Knowledge, or possibly as supplying Energy to such Magicians as may have found their way to the Sources of Strength. In all cases, naught is worth an obol save as it serve to help the One Great Work"