Then you know that Sam was the true hero of the tale,' Sayna said. 'That he faced far greater and more terrible foes than he ever should have had to face, and did so with courage. That he went alone into a black and terrible land, stormed a dark fortress, and resisted the most terrible temptation of his world for the sake of the friend he loved. That in the end, it was his actions and his actions alone that made it possible for light to overcome darkness.
Jim ButcherMagic 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 Butcher