MS is highly individualistic in its course. A friend of mine has it and she's sharp as a tack.

But his "I'm not perfect" response would annoy and anger me. It's a non-engagement, passive aggressive power tactic. It's impossible to argue with, it denies any responsibility for wrongful actions, and yet appears to be an essential truth--which makes the other person seem unreasonable. If that's his go-to excuse, I couldn't tolerate it.