I Make Myself Invisible in Articles by Aleister Crowley.

“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.” [via, also]

Consider also:

  1. “I had realized, by this time, that my path to power was to be immensely difficult and fraught with danger. But I did not look back.”
  2. “During one ceremony in July 1909, in the Victoria Street studio, we invoked Bartzabel, the spirit of Mars. One of those present was a man of importance in the Admiralty, a commander whose name is too well known to mention. He asked the spirit, which had been invoked in a specially purified and consecrated man, if ‘nation would ever rise against nation.’ Bartzabel answered that it would. Questioned further, the spirit said that war would break out within five years, and that the nations which would be smashed would be Turkey and Germany. Within a fortnight of the end of those five years the Great War broke out.”
  3. “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.”
  4. “I then went to Egypt, and–to my intense surprise–was summoned by the secret chiefs of the Order. I was commanded to return to England, there to reconstruct the system of organisation, as the outer form of the Order had broken up through the fall of its chief ambassador to the world ‘without the Veil,’ and to put the secrets in writing.”
  5. “For he who is not pure in body and mind he who is enslaved by passions and desires, or by bondage to the material interests of this world, is, by the very fact of his uncleanness, prevented from passing on. Nothing unclean or that defileth a man, we are told, can enter into the kingdom; and, therefore, our candidates are told that if they have ‘money or metals about them’; if, that is, they are subject to any physical attraction or mental defilement, their real initiation into the higher things, of which our ceremony is but a dramatic symbol, must be deferred and repeated again and again until they are cleansed and fitted to pass on.”