[Arthur is silent and still for a few seconds. Mental scales always weighing up what it's worth admitting, and what he owes.

Until finally he lets a slow breath out, and sits slowly up again.]

And I am honest with you, doctor. But there is... [His face tilts slightly, looking away if he'd had the sight for it.] There are parts to me that I will not share. Not then with Parker, not even now with John.

[Things that he did share, and got used against him. Things he's ashamed of, still hurts for, things he should and does regret and things he refuses to.]

I'm sorry.