The most amazing thing about stuff like the Hogfather is how Pratchett can present such ridiculous material that has such brilliant and moving undertones throughout. Death's speech to Susan at the end, for example. Pratchett is a master of addressing deep concepts within a seemingly silly lark.
Indeed, things like Vimes speech about people (and especially coppers) taking the law into their own hands at the end of "Snuff", or the ancestor worship theology in "Nation"
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