 Some of Nietzsche’s books (notably The Birth of Tragedy, the Genealogy, and the Antichrist) offer greater continuity of argumentation, but even there, he will often take advantage of section breaks to drop one thread of reasoning and move on to apparently unrelated points, leaving the reader to piece together how the various aspects of his case are supposed to fit together (GM II is a notoriously challenging case in point; see Reginster 2018b, 2021). Thus Spoke Zarathustra is unified by following the career of a central character, but the unity is loose and picaresque-like—a sequence of episodes which arrives at a somewhat equivocal (or at a minimum, at a controversial) conclusion that imposes only weak narrative unity on the whole.