As a matter of fact, we’ve successfully tackled Harvey’s obsession with duality. I’m sure you’re familiar with this silver dollar - scarred on one side, unmarked on the other. He used to make all his decisions with this, as though it somehow represented the contradictory halves of his personality.

Excuse me, Batman, but we’d really prefer it if you call the inmates by their real name. Harvey Dent is his.

The Joker’s a special case. Some of us feel he may be beyond treatment. In fact, we’re not even sure if he can be properly defined as insane.