My intention for Mental Health Month had been to traverse the history of mental health, but my first two articles didn't get much beyond the Dawn of Man. In this article, we manage to jump ahead 700,000 years, give or take a year or two, to the Greek physician Hippocrates, who lived circa 400 BC. Among other things, Hippocrates postulated on what he called "the four humors," which he believed accounted for human behavior.
"Black bile," for instance, literally means melancholia. A few...
