The good moral work of art should have all the qualities that a good amoral work of art should have, such as formal unity, balance, contrast, and a sensitivity to the material out of which it is made. ↗
But it has, in addition, an even more precious quality - a consciousness of the human intelligence, the human spirit and that man is a social creature. ↗
I don't know whether it ever comes back to the same thing; it does return to the spirit of a previous period in some way, but it's different, it's new. ↗