It pleases him how Spell is how the word is made but also, in the hands of the magician, how the world is changed. One letter separates Word from World, and that letter is like the number one, or an 'I', or a shaft of light between almost closed curtains. There is an old letter called a thorn, which jags and tears at the throat as it's uttered. Later he learns that Grammar and Glamour share the same deeper root, which is further magic, and there can be neither magic without that root, nor plant. He's lost in it like Chid in Child, or God reversed into Dog. Somewhere inside him is a colon. A sentence can last for life.