Magic, at least in my ideas, is the ultimate potential energy. If you know how to tap into it, you can all most anything, but it doesn't come free. Its like a fire hose, if you don't control it, it can get away from you. You can also damage youself if you don't manage your power, it can comsume you, and it can escape back into the environment and cause damage. Magic is created by natural and supernatural forces. Natural forces like earthquakes, wind, fire, and such; supernatural ones like fortean sightings, and weird events. The whole thing that make magic somewhat hard it finding an easier way to raise it, its there, you just have to learn who to tap into it, for this you have to find a crutch, aka talismans & foci. I know that my take is nothing new, and I freely admit that I am influenced by all of the authors I have read. The only path that I have taken that is a little different, and again no orginial is that I think magic and science can work together, they just have to be watched, and they sometimes have synergistic effects on each other; in other words magic and screw up your electronics and your electronics can screw up your magic.