From Searching for Bobby Fischer
His chess ideas are like pieces of his body he's reluctant to give up. For instance, he simply can't cope with being told not to bring his queen out too early in the game. Why shouldn't he? He's won many a game in Washington Square doing exactly that, why is this suddenly wrong?
Try getting him to brush his teeth sometime.
What I'm trying to teach him and what he's learning there are two very different things. Park hustlers play tactics, not position. They rely on wild, unpredictable moves meant to intimidate their opponent. Great in a two-minute speed game for drug money, but it'll cost Josh dearly in real games.