[Well, he wouldn't, but not for a reason like guile or secrecy. Magic is so innately part of Merlin that describing what he can do is like describing why he enjoys breathing—it just wouldn't be very informative. He has no concept of how other people can't understand it despite knowing that many people can't.
But.]
Not really, no. I could, but I haven't bothered to learn.
no subject
But.]
Not really, no. I could, but I haven't bothered to learn.