"What is art?" or "I can't explain what art is, but I know it when it grabs me".
Art is what moves the soul.
All else is intellectual masturbation, propaganda, decoration or entertainment.
My first response to art is profound recognition, a sense that, although this is new or strange or different, I know it in my bones. It's a kind of terrible joy, for the soul loves darkness almost more than it loves the light.
The soul loves beauty, but not prettiness. The soul loves love, but not sentimentalism.
Above all, the soul is for the depth of experience enfolded in life.