Aristotle

Aristotle, the ancient Greek philosopher, is the most powerful intellectual presence in the novel, a figure whose authority is invoked by both the learned and the heretical, and whose lost second book of the Poetics becomes the literal and symbolic center of the abbey's crisis. His work, as interpreted by the novel's characters, represents the dangerous potential of human reason to challenge dogma, and the ultimate fate of his forbidden text—devoured and burned—mirrors the novel's central tragedy: the destruction of knowledge by those who fear its liberating power.

Intellectual Authority and the Threat of Reason

Throughout the novel, Aristotle is cited as the ultimate authority on logic, natural philosophy, and poetics. William of Baskerville, the Franciscan detective, repeatedly invokes him, as when he defends the use of laughter by citing Aristotle's Poetics and Rhetoric during the scriptorium debate. Venantius of Salvemec, the translator, argues that Aristotle himself devoted a whole book to laughter, implying it is a vehicle for truth. This reverence for the Philosopher, as he is called, is precisely what makes him dangerous to the novel's antagonist, Jorge of Burgos. Jorge fears that Aristotle's rational analysis of comedy would legitimize mockery as a tool against authority, teaching men to laugh at fear—including the fear of God and the Devil—thereby undermining the very foundation of the Church's power. The debate over Aristotle's lost book is thus a debate over whether reason can and should be used to question the established order.

The Lost Book: Aristotle's Poetics II as the Forbidden Object

The central mystery of the novel revolves around a single, unique manuscript: the second book of Aristotle's Poetics, believed lost for centuries. This book, hidden in the secret room of the library called the finis Africae, is the prize that Venantius, Berengar, and Adelmo all sought, and the cause of their deaths. Jorge of Burgos, the blind librarian, has guarded it for decades, poisoning its pages so that anyone who reads it will die. The book's contents, as partially revealed by William, argue that comedy, by inspiring the pleasure of the ridiculous, achieves a catharsis of that passion, and that laughter is a tool for revealing truth through wit, parody, and the depiction of base human actions. This is the knowledge Jorge considers more dangerous than any heresy, because it would make the sacred subject to mockery and doubt.

The Confrontation and the Destruction of the Book

In the climactic scene in the finis Africae, William confronts Jorge, who has already consumed much of the manuscript to prevent it from being read. Jorge justifies his murders as a holy act, arguing that the book would unleash a new age of mockery and destroy the fear that sustains the Church. William, in turn, accuses Jorge of being the true Devil—not a creature of matter, but of the arrogance of a spirit that believes it possesses the absolute truth. In a final act of defiance, Jorge throws the lamp, setting the library ablaze. The book, along with the entire library, is consumed by fire. The destruction of Aristotle's lost work is the novel's ultimate catastrophe, a physical manifestation of the victory of fanaticism over inquiry, and of the fear of laughter over the liberating power of reason.

Thematic Significance: The Philosopher of Doubt

Aristotle's role in the novel transcends that of a mere plot device. He embodies the principle of rational inquiry that William champions, a method of questioning and deduction that seeks order in the world. Yet, as William himself admits at the novel's end, the order he discovered was an illusion, a pattern he imposed on a series of random events. Aristotle's philosophy, which promises a systematic understanding of the universe, ultimately fails to provide a complete or comforting truth. The novel suggests that the pursuit of truth is a necessary, even noble, endeavor, but it is also a perilous one that can lead to destruction when it confronts the absolute certainties of faith. The lost book on comedy, which would have taught men to laugh at their own certainties, represents a wisdom that the world, in the novel's grim conclusion, is not yet ready to receive.