I finished reading a history of Secret Societies recently. It covered the Masons, Illumanati, Sufis, Mithra - and many more. I found the book itself rather dry in reading but the information fascinating. Even the scant information known about the societies was enough to be able to draw cross references with all of those included in the book as well as many organised religions of modern times. They all use the same general principles in recruitment and draw from the same portion of people; those looking to belong. All practices involved were also substantially similar to eachother to gain their spiritual euphoria; drums, dancing, physical fatigue, consumption of various concoctions, and fellowship with other people. Not just the ingredients but how they are applied to new recruits which make one stand back in near disbelief.