Magic is a kind of energy. It is given shape by human thoughts and emotions, by imagination. Thoughts define that shapeโand words help to define those thoughts. Thatโs why wizards usually use words to help them with their spells. Words provide a sort of insulation as the energy of magic burns through a spell casterโs mind.
Jim ButcherWell. Weโll just have to hope that this wasnโt a loup-garou, I guess.โ โIf it was a louper, youโd know,โ Bob said wisely. โIn the middle of this town, youโd have a dozen people dead every time the full moon came around. Whatโs going on?โ โA dozen people are dying every time the full moon comes around.
Jim ButcherOh," the girl said, shaking her head. "Don't be so simple. People adore monsters. They fill their songs and stories with them. They define themselves in relation to them. You know what a monster is, young shade? Power. Power and choice. Monsters make choices. Monsters shape the world. Monsters force us to become stronger, smarter, better. They sift the weak from the strong and provide a forge for the steeling of souls. Even as we curse monsters, we admire them. Seek to become them, in some ways." Her eyes became distant. "There are far, far worse things to be than a monster.
Jim Butcher