The texts of the Greek magical papyri are often written as we might write a recipe: "Take the eyes of a bat..." for example. So in other words the magic requires certain ingredients, much as Odysseus required the herb Moly to defeat the magic of Circe. But it is not just as simple as knowing how to put a recipe together. Appropriate gestures, at certain points in the magical ritual, are required to accompany the ingredients, different gestures it would seem produce various effects. A magical ritual done in the right way can guarantee the revealing of dreams and the rather useful talent of interpreting them correctly. In other cases certain spells allow one to send out a daemon or daemons to harm one's enemies or even to break up someone's marriage.