Karl Marx’s Das Kapital includes, in chapter 10, the lines: “Capital is dead labour that, vampire-like, only lives by sucking living labour, and lives the more, the more labour it sucks. Perhaps Marx had read Vuk Karadzić, because he too conflates analogies about vampires and werewolves, describing ‘the werewolf’s hunger for surplus labour’ and observing that “the prolongation of the working day quenches only in a slight degree the vampire thirst for the living blood of labour’.

— Slavic Myths by Noah Charney, Svetlana Slapsak