William stared down at the box of letters again. Of course, a quill pen potentially contained anything you wrote with it. He could understand that. But it did so in a clearly theoretical way, a safe way. Whereas these dull grey blocks looked threatening. He could understand why they worried people. Put us together in the right way, they seemed to say, and we can be anything you want. We could even be something you don’t want. We can spell anything. We can certainly spell trouble.