In Magick, on the contrary, one passes through the veil of the exterior world (which, as in Yoga, but in another sense, becomes "unreal" by comparison as one passes beyond) one creates a subtle body (instrument is a better term) called the Body of Light; this one develops and controls; it gains new powers as one progresses, usually by means of what is called 'initiation': finally, one carries on almost one's whole life in this Body of Light, and achieves in its own way the mastery of the Universe.