by definition, photography is the art of capturing light.
but I believe it's more than that. to me, photography is the art of capturing emotion.
anyone with decent glass can point a camera and click. they can say "stand like this, put your hand here", do a little photoshopping and make a nice picture. but it takes something more to capture real human emotion.
by no means have I mastered the art. but I can't waste my time trying to achieve anything less.