User blog comment:-Chloe-/Magic?/@comment-5139779-20120826162343/@comment-5106105-20120826211741

I think people are born with magic. But they must study it, if they want to be better. I think Gaius asked Merlin where he had studied, because he was so good at it. Not everybody with magic can stop the time and move a bed. And, when Merlin answered, that he hadn't studied, and Gaius said it was impossible, I think he doesn't thought it was impossible to be born with magic, but be born with such powerful magic.

And with the magical objects and stuff, I think it is because it is enchanted by a person born with magic. Cylfreth (the man in Gwaine, who gave the two bandits the swords and crystals) had magic; we saw he used it on the crystals. And therefore I think he enchanted the crystals, so Dagr and Ebor (the bandits) could use it. It wasn't them, who were magical, it was the crystals.

But I agree that we haven’t got a straight answer. We can only guess :-D And if people not born with magic can learn it, I think it will take a lifetime to be good at it. It could explain why not everyone uses magic. But I still believe that people must be born with magic, if they will use magic.