[He flicks a glance down at the hands on his shoulder, surprised, then looks up at Kay.]

It's difficult to remember how to trust people. I've seen too many betrayals, and been betrayed a time or two myself. I've been around ambitious, self-serving politicians so long I'm not sure I remember what genuinely good people look like. I'm not even entirely sure I trust you. But...[He cocks his head.]...you seem like an honourable man. And you certainly have the art of discretion down.

I don't know how to ignore the fear that once again this will spiral out of control, as it did on Gallifrey. [And the fear that he'll fail to stop it. Even though here it's not his responsibility to stop it.]

On Gallifrey, the terrorist's prime targets were Academy students. Barely more than children.