I Make Myself Invisible in Articles by Aleister Crowley.

“They had curious effects on the neighbourhood. Part of the main road from Inverness to Fort Augustus ran through my estate. Soon superstitions about the road made the natives avoid it. People refused to use it after nightfall.

Even the tough, hard-drinking workmen from Glasgow who were employed at Foyers would go a long way round to avoid that uncanny road.” [via, also]

Consider also:

  1. “However that may be, I was able to walk out in a scarlet-and-gold robe with a jeweled crown on my head without attracting any attention. They could not see me.”
  2. “Then the fun began. We saw–and my teacher was able to identify–hundreds of shapes, weird “half-formed faces” which were thronging the room, marching in fantastic dance about its confines. These were definitely malicious forces, demons, which one had to study and conquer.”
  3. “My success with Yoga was so great that it became dangerous. For my own good I left it alone for two years, departing from Ceylon and going to India.”
  4. “My most memorable personal experience of the effects of black magic occurred when I was living in Scotland. The machinations of a degraded and outcast member of the Order caused my hounds to die, my servants to become insane. The struggle lasted until the recoil of the current of hated caused the luckless sorcerer to collapse.”
  5. “These fantastic physical powers lasted for about two months, and were followed by reaction. For half a year I was in a state of lassitude. I had been playing with a dangerous recipe.”