Art is a science of learning from self-awareness. Sadness from romanticism (yesterday) to seasonal affective disorder (since hard-nose science overtook mood studies; see the charmingly eccentric weeping girl).
It's so lonely when you don't even know yourself.
Caspar David Friedrich, You can't win, survival is the goal.
(caption of picture : an image of a particular artwork should be shown with little more information than its title, medium and dimensions).