The Spirits' Book
Book Two - The Spirit World
Chapter IX - Intervention of Spirits on the Physical World
Occult Powers, Talismans and Sorcerers
554. Could those who believe in talismans attract spirits by their belief alone? Here the talisman would be a sign that helps direct their thoughts, which then are the true cause of the actions that take place.
“This is true, but the nature of the spirit attracted would depend on the purity of intent and the elevation of the party attracting it. One who is simple enough to believe in a talisman rarely has anything more than material motives. In any event, such practices imply a narrowness and a weakness of mind that would naturally pave the way for inferior and mocking spirits.”