Lorenzo Valla (1407–1457) ranks among the greatest scholars and thinkers of the Renaissance. He secured lasting fame for his brilliant critical skills, most famously in his exposure of the “Donation of Constantine,” the forged document upon which the papacy based claims to political power. Lesser known in the English-speaking world is Valla’s work in the philosophy of language—the basis of his reputation as the greatest philosopher of the humanist movement. Dialectical Disputations, translated here for the first time into any modern language, is his principal contribution to the philosophy of language and logic. With this savage attack on the scholastic tradition of Aristotelian logic, Valla aimed to supersede it with a new logic based on the actual historical usage of classical Latin and on a commonsense approach to semantics and argument. Valla provides a logic that could be used by lawyers, preachers, statesmen, and others who needed to succeed in public debate—one that was stylistically correct and rhetorically elegant, and thus could dispense with the technical language of the scholastics, a “tribe of Peripatetics, perverters of natural meanings.” Valla’s reformed dialectic became a milestone in the development of humanist logic and contains startling anticipations of modern theories of semantics and language. Volume 1 contains Book I, in which Valla refutes Aristotle’s logical works on the categories, transcendentals, and predicables, with excursions into natural and moral philosophy and theology.

The Dialectical Forge identifies dialectical disputation (jadal) as a primary formative dynamic in the evolution of pre-modern Islamic legal systems, promoting dialectic from relative obscurity to a more appropriate position at the forefront of Islamic legal studies. The author introduces and develops a dialectics-based analytical method for the study of pre-modern Islamic legal argumentation, examines parallels and divergences between Aristotelian dialectic and early juridical jadal-theory, and proposes a multi-component paradigm—the Dialectical Forge Model—to account for the power of jadal in shaping Islamic law and legal theory.In addition to overviews of current evolutionary narratives for Islamic legal theory and dialectic, and expositions on key texts, this work shines an analytical light upon the considerably sophisticated “proto-system” of juridical dialectical teaching and practice evident in Islam’s second century, several generations before the first “full-system” treatises of legal and dialectical theory were composed. This proto-system is revealed from analyses of dialectical sequences in the 2nd/8th century Kitāb Ikhtilāf al-ʿIrāqiyyīn / ʿIrāqiyyayn (the “subject-text”) through a lens molded from 5th/11th century jadal-theory treatises (the “lens-texts”). Specific features thus uncovered inform the elaboration of a Dialectical Forge Model, whose more general components and functions are explored in closing chapters.

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Lorenzo Valla (1407–1457) ranks among the greatest scholars and thinkers of the Renaissance. He secured lasting fame for his brilliant critical skills, most famously in his exposure of the “Donation of Constantine,” the forged document upon which the papacy based claims to political power. Lesser known in the English-speaking world is Valla’s work in the philosophy of language—the basis of his reputation as the greatest philosopher of the humanist movement. Dialectical Disputations, translated here for the first time into any modern language, is his principal contribution to the philosophy of language and logic. With this savage attack on the scholastic tradition of Aristotelian logic, Valla aimed to supersede it with a new logic based on the actual historical usage of classical Latin and on a commonsense approach to semantics and argument. Valla provides a logic that could be used by lawyers, preachers, statesmen, and others who needed to succeed in public debate—one that was stylistically correct and rhetorically elegant, and thus could dispense with the technical language of the scholastics, a “tribe of Peripatetics, perverters of natural meanings.” Valla’s reformed dialectic became a milestone in the development of humanist logic and contains startling anticipations of modern theories of semantics and language. Volume 2 contains Books II–III, in which Valla refutes Aristotle’s logical works on propositions, topics, and the syllogistic.

This book reconstructs the tradition of dialectic from Aristotle's Topics, its founding text, up to its "renaissance" in 16th century Italy, and focuses on the role of dialectic in the production of knowledge. Aristotle defines dialectic as a structured exchange of questions and answers and thus links it to dialogue and disputation, while Cicero develops a mildly skeptical version of dialectic, identifies it with reasoning in utramque partem and connects it closely to rhetoric. These two interpretations constitute the backbone of the living tradition of dialectic and are variously developed in the Renaissance against the Medieval background. The book scrutinizes three separate contexts in which these developments occur: Rudolph Agricola's attempt to develop a new dialectic in close connection with rhetoric, Agostino Nifo's thoroughly Aristotelian approach and its use of the newly translated commentaries of Alexander of Aphrodisias and Averroes, and Carlo Sigonio's literary theory of the dialogue form, which is centered around Aristotle's Topics. Today, Aristotelian dialectic enjoys a new life within argumentation theory: the final chapter of the book briefly revisits these contemporary developments and draws some general epistemological conclusions linking the tradition of dialectic to a fallibilist view of knowledge.

One of the most challenging problems in the history of Western ideas stems from the emergence of Modernity out of the preceding period of the Latin Middle Ages. This volume develops and extends the insights of the noted scholar Thomas M. Izbicki into the so-called medieval/modern divide. The contributors include a wide array of eminent international scholars from the fields of History, Theology, Philosophy, and Political Science, all of whom explore how medieval ideas framed and shaped the thought of later centuries. This sometimes involved the evolution of intellectual principles associated with the definition and imposition of religious orthodoxy. Also addressed is the Great Schism in the Roman Church that set into question the foundations of ecclesiology. In the same era, philosophical and theoretical innovations reexamined conventional beliefs about metaphysics, epistemology and political life, perhaps best encapsulated by the fifteenth-century philosopher, theologian and political theorist Nicholas of Cusa.