I have pointed to this blog before and although it's usually business oriented he makes good general sense. This is the first comment I've read about art and I really liked it.
"Art is what we call...
the thing an artist does.
It's not the medium or the oil or the price or whether it hangs on a wall or you eat it. What matters, what makes it art, is that the person who made it overcame the resistance, ignored the voice of doubt and made something worth making. Something risky. Something human.
Art is not in the eye of the beholder. It's in the soul of the artist."
Seth's Blog