Plato’s Republic and Nolan’s Gotham, Part I

[I have a theory that Christopher Nolan’s The Dark Knight Trilogy is influenced to some degree by Plato’s Republic. At the least, the two texts would make for good conversation partners. Plato draws correspondences between the just or unjust city and the just or unjust soul, and the films are as much about the struggle for justice in Gotham City as they are about Bruce Wayne’s struggle to become a just man. In this series of posts, I point out some potential links between the book and the films that occurred to me while re-reading Republic recently.] 

First, is Lucius Fox’s sonar device in The Dark Knight a response to the myth of the Ring of Gyges? 

In Republic Book II Glaucon tells Socrates the story of Gyges to illustrate the commonplace belief “that one is never just willingly but only when compelled to be.” Gyges found a ring that made him invisible and used it to “do injustice with impunity.” Glaucon’s point is that, because “every man believes that injustice is far more profitable to himself than justice,” no one would use the ring any other way if he could get away with it  (p. 36 in the 1992 Grube & Reeves translation).

In The Dark Knight, the Joker believes something similar, that Gotham’s best citizens only act virtuously when it is socially reinforced: “You see, their morals, their code, it's a bad joke. Dropped at the first sign of trouble. They're only as good as the world allows them to be. I'll show you. When the chips are down, these, these civilized people, they'll eat each other.” 

But unbeknownst to the Joker, Bruce has access to a sonar device, courtesy of Lucius Fox, that works almost the same as the Ring of Gyges: it allows him to see anything happening anywhere in Gotham while not being seen. Bruce intends to use it only to find and catch the Joker, but because he recognizes its potential corrupting power, he has Lucius operate it instead, then destroy it—which he does. That Lucius can wield the power of the sonar device without abusing it, then freely let it go once it has served its one justifiable purpose, shows that the Joker is wrong. Even when the chips are down, there are people who will stick to their moral code. Or, to use Glaucon’s terms, there are people who will be just willingly and without compulsion, because they believe that injustice is ruinous in and of itself, even if no one punishes it, and that justice is profitable in and of itself, even if no one rewards it. Certainly, no one ever rewards Bruce and Lucius for their self-denying restraint, because no one else knows the sonar device ever existed. 

This last point reminds me of Blake’s complaint to Gordon in the next film, that no one in Gotham will ever know that it was Bruce Wayne who saved them. But that anonymity is precisely what shows that Bruce is a just man in the end.