Impure forces are spiritual by nature and opposite to the Creator. Therefore impure forces come from the left line only to people who are on spiritual levels, and pure forces come from the right line, and a person is between the two and operates with these two opposite attributes in him. They are all inside of us, not outside of us. The things people say, that there are some kind of witches, some kind of devil appears from some corner… Nothing like this exists. These are all fairy tales that were heaped up by different religions because those religious leaders do not and did not have any idea about what the spiritual is, and therefore they came up with all of this in their imagination.
Courtesy of http://www.youtube.com/watch?v=__FB3OPNhh8