[At that, Sabriel just laughs. Not unkindly, but still. Yzak clearly cares, he's just unwilling to say it out loud.]

I won't tell him. But I will make sure you learn enough to heal him and restrain him from doing anything catastrophically stupid.

[That's what friends did for each other, wasn't it? Helped them when they got hurt, and kept them from making mistakes.]

We'll start at your next lesson.