Every work of art is one half of a secret handshake, a challenge that seeks the password, a heliograph flashed from a tower window, an act of hopeless optimism in the service of bottomless longing. Every great novel or comic book convenes the first meeting of a fan club whose membership stands forever at one but which maintains chapters in every city — in every cranium — in the world. Art, like fandom, asserts the possibility of fellowship in a world built entirely from the materials of solitude.