Mystery

I was surfing around today, reading quotes for the next PhotoArt Journaling assignment and I ran across this one:
The job of the artist is to deepen the mystery.
--- Francis Bacon
This could be interpreted a number of ways... Deepen the mystery by making you wonder? Make you wonder what? What the artist was thinking? What the artist is making YOU think? How the artist made it? Why the artist made it? How it makes you feel? It's a mystery.