Really had to power through the first half (or more?) of this one, which reads for a while like a philosophy essay. Poe throws out all sorts of “word of the day” vocabulary (“supererogation” is a nice one) as he muses about the purposes of men’s actions – why they do what they do. Really the most I can say for this is that he touches upon some interesting pseudoscientific and philosophical ideas. His references to phrenology help create a nice gothic kind of vibe.
Eventually he gets to talking about something that is rather opposite the conscience (man’s impulse to do good) or his selfish sense of self-preservation (man’s impulse to do what is good for him) – what he calls “perverseness.” Perverseness, he contends, is a sort of impulse without a motive that drives a man to do something ill.
The story picks up when he shifts to narrative, telling us of a crime he had committed in a bout of perverseness. Again I won’t give away the ending, but once more there is a sort of madness that overtakes him and causes his undoing.
If you can make it past the first half, it’s a nice, weird little tale.