<p>A depressive illness or a passing feeling? Mental detachment or a precursor to genius? Melancholy is a critical part of what it is to be human, yet everything from Prozac to self help psychology books seems intent on removing all signs of sadness, depression, or, quite simply, low moods from contemporary existence. Complex and contradictory, melancholy's presence weaves through the histories of both science and art.<br>A Field Guide to Melanch...