Mat's been here long enough that he doesn't take much offense at the question. Though his lips do purse a bit and there's a flash of something in his eyes, flickering then gone. Jaskier doesn't know him, and he's offering him apprenticeship. It's an unfortunately reasonable question to ask.

"I can read just fine. And write, and do sums. My education wasn't formal, but it wasn't lacking."

And he knows he's lucky for it, and ought be proud he can answer 'yes'. But mostly he just wishes no one felt the need to ask in the first place. Even if there's no malice in it.

"And I think I like the long lute. S'got personality."