“To ‘invoke’ is to ‘call in’, just as to ‘evoke’ is to ‘call forth’. This is the essential difference between the two branches of magick. In invocation, the macrocosm floods the consciousness. In evocation, the magician, having become the macrocosm, creates a microcosm. You invoke a God into the Circle. You evoke a Spirit into the Triangle of Art.”
- Crowley