House: As long as you're trying to be good, you can do whatever you want.
Dr. Wilson: And as long as you're not trying, you can say whatever you want.
House: So between us, we can do whatever we want. We can rule the world!
Episode 6.12, Moving The Chains: Marcus tells House that he and Eric were arrested for stealing a car, he was 16 and Eric was 14. He also says that his brother never did anything criminal after that. In season 1, we were told that Eric was 16 when he was arrested for stealing a car.