Art and literature are two sides of the same coin.  One cannot just simply exist without the other. Any sort of art will have some kind of text or writing associated with it. Art and literature compliment each other. They enhance each others beauty. Art and literature may seem to be only for a visual purpose from outside but, only those who have the inner zeal to find its meaning can comprehend it. Common men take it just as a treat for their eyes. Those who have the real knowledge can only taste it. Every art form and literature piece tells a story. It depends on the individual to make out the real meaning behind it. If you have that understanding and knowledge you can see and feel God in a stone if not , an idol of God seems like a mere stone.