While Umberto Eco's intellectual itinerary was marked by his early studies of post-Crocean aesthetics and his spectacular concentration on linguistics, information theory, structuralism, semiotics, cognitive science, and media studies, what constitutes the peculiarity of his critical and fiction writing is the tension between a typically medieval search for a code and the hermeneutic representative of deconstructive tendencies. This tension betweencosmosandchaos, order and disorder, is reflected in the wordchaosmos. In this brilliant assessment of the philosophical basis of Eco's critical and fictional writing, Cristina Farronato explores the other distinctive aspect of Eco's thought - the struggle for a composition of opposites, the outcome deriving from his ability to elicit similar contrasts from the past and re-play them in modern terms. Focusing principally on how Eco's scholarly background influenced his study of semiotics, Farronato analyzesThe Name of the Rosein relation to William of Ockham's epistemology, C.S. Peirce's work on abduction, and Wittgenstein's theory of language. She discussesFoucault's Pendulumas an explicit comment on the modern debate on interpretation through a direct reference to Early Modern hermetic thought, correlatesThe Island of the Day Beforeas a postmodern mixture of science and superstition, and reviewsBaudolinoas an historical/fantastic novel that once again situates the Middle Ages in a postmodern context.Eco's Chaosmosdemonstrates how Eco's use of semiotic theory is important for an understanding of the postmodern aspects of today's literature and culture.