Magic teaches us how to lie without guilt.
All magic is about transformation... the performance magician is telling you that you are the magician in your own life. You are the agent of transformation, your own transformation.
Everyone wants to change, but no one wants to do anything differently.
The house of magic has many rooms.
The spirits are an age-old theme, a story from darkest history, and therefore a presentational anchor that can be used with many different magic tricks.