“That a little knowledge is a dangerous thing,” Evar said. “And as my brother Mayland was fond of saying, that’s a law that scales swiftly. A lot of knowledge is a very dangerous thing. A man who knows how to sharpen a stick can stab his neighbour to death. That’s a little knowledge for you. But Clovis knows about weapons that can level continents and leave nothing save dust. And Mayland knew about wars in which that actually happened.”