Confessions of an English Opium Eater

Confessions of an English Opium Eater, Thomas De Quincey - I have rarely read anything this hard. It's funny, if I know something's hard in advance, I can gather my forces and plow my way through it, but the title of this made it seems a lot more promising than it managed. That's unfair: I just thought it would be about something different than it turned out to be. But come on - who wouldn't?