I Make Myself Invisible in Articles by Aleister Crowley.

“A curious thing happened on one occasion. At Madura I went into a temple and sacrificed a goat. Soon after I completely cut off my trail by a sea voyage—a great storm was raging, and I was the only person to board the ship.

Some time afterwards I returned to India and visited some friends, who knew nothing about my activities in Calcutta.

They told me that their servants were excited about a queer tale that I had sacrificed a goat at Madura, the most sacred city of South India.” [via, also]

Consider also:

  1. “I took a bungalow at Kandy and was steered through the beginnings of the art. Yoga may be taught in eight words. ‘Sit still! Stop thinking! Shut up! Get out!’ It is the learning that is difficult.”
  2. “Homard a la Thermidor destroys the digestion. The last of these facts is the one of which I am most certain.”
  3. “In Mexico, too, I made my first experiments in acquiring invisibility. By invoking the God of Silence, Harpocrates, by the proper ritual in front of a mirror, I gradually got to the stage where my reflection began to flicker like the images of one of the old-fashioned cinemas.”
  4. “I constructed a private temple in a flat in Chancery Lane. It was a hall of mirrors, the function of which was to concentrate the invoked forces. It contained an altar of acacia topped with gold and certain secret symbols and regalia of the Order.”
  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.”