"The second set of rules which she gives us occurs in her book Practical Occultism. They are twelve in number, but she tells us that they are taken from a list of seventy-three, to enumerate which would be useless, as they would he meaningless in Europe, though she says that every instructor in the East is furnished with them."
January 1, 1970
https://en.wikiquote.org/wiki/The_Masters_and_the_Path