[However], the sufferer from depression has no option, and...

[However], the sufferer from depression has no option, and therefore finds himself, like a walking casualty of war, thrust into the most intolerable social and family situations. There he must ... present a face approximating the one associated with ordinary events and companionship. He must try to utter small talk and be responsive to questions, and knowingly nod, and frown and, God help him, even smile.