[And that wasn't enough disturbing to last him for a few days?]
A lot of it's about all of these weird things they'd do that were supposed to fix people, like exorcisms and lobotomies and trepanning. I guess they figured that stuff worked since some people that had those things done to them died or were so messed up after that no one could tell if they were still crazy. [Look at all of this telling that he's doing!]