Had to spend a while googling to make sure this wasn't an elaborate 21st century literary hoax. Apart from having aged surprisingly well (yes, he thinks depression is caused by demonic possession or unbalanced bodily fluids, but the way he both describes it, sympathises with it and discusses its treatment is remarkably modern) Burton's all-out rant on mental health, with enough asides to make Sterne's head spin, is just so much fun to read.