One does have to wonder, since there really does seem to be a pretty major connection between the extremes of mind and emotion, and creative/deep thoughts. What is normal variation and what is illness? Where is that line drawn? Can we accept the value of melancholy? It seems that the works are valued but the minds they come from are still thought to be sick. Granted, living in that state may be uncomfortable. Even life threatening. But that doesn't mean there's no value in it.