"That's true." Except, apparently, at the very end. (The thought isn't one he welcomes, and he doesn't voice it.)

Feuilly shrugs a little. "I didn't train many people in the workshop, but--still--when someone is starting to get good, it's a mistake to knock them down in, in their confidence, too hard?" Eh. It's just--a thought. "But still, I guess your father trusted you wouldn't break."

Which is a kind of trust.