I Make Myself Invisible in Articles by Aleister Crowley.

“A necessary part of the practice of magic is the invocation of Divine and angelic beings and the evocation of blind forces, some of which are considered ‘evil’ by the vulgar.” [via]

Consider also:

  1. “It was at the direction of the head of the Order that I then went to Scotland, to my manor house of Boleskine, which is two or three miles from the Falls of Foyers. My subsidiary object–the principal aim is too sacred to discuss–put into simple language was to gain control over the ‘four great princes’ of the evil of the world.”
  2. “One night, after a ceremony in which a well-known analytical chemist was my leader, I locked the door and went out with him to a meal. When we returned the door was wide open, though the lock had not been forced, and the whole contents of the temple had been thrown about and lay in the wildest confusion.”
  3. “I always think of Mr Wells’ First Men in the Moon. How to act when the fundamental conditions of life are changed? The danger of making fatal mistakes is always present.”
  4. “It is like looking for an escape of gas with a lighted candle. As far as the search goes, there is little fear of failure!”
  5. “Later, when I was transferring my apparatus to my house in Scotland, I employed two workmen to remove the mirrors. As they were working they were suddenly overcome, knocked out by unseen assailants. It took several hours to revive them. People passing the doorway suddenly fell down in fits. That flat remained without a tenant for years after I had left it. All this was because I had not enough experience to control the forces.”