They may be rulers themselves, as in E.R. Eddison's The Worm Ouroboros, where both the heroes and the villains, although kings and lords, supplement their physical power with magical knowledge, or as in Jonathan Stroud's Bartimaeus Trilogy, where magicians are the governing class.[1]:1027 On the other hand, magicians often live like hermits, isolated in their towers and often in the wilderness, bringing no change to society. In some works, such as many of Barbara Hambly's, they are despised and outcast specifically because of their knowledge and powers.[5]:745