It comes from within, and around. I mean, back on Spira we have spheres that help, but you can have all the spheres and if you don't bother to learn it doesn't mean anything. I think magic comes from yourself though, because I've noticed when people do too much, they get exhausted. Sometimes they aren't able to do any for a while after that. If it was as easy as drawing it from the world, we'd be able to do as much as we want.