Preface Introduction PART ONE: The Attack on Aristotelian-Scholastic Metaphysics 1 The Analysis of Things: Substance, Quality, and the Tree of Porphyry 2 Thing and Word: A Critique of Transcendental Terms 3 From a Grammatical Point of View: The Reduction of the Categories PART TWO: Soul, Nature, Morality, and God 4 Soul and Nature: A Critique of Aristotelian Psychology and Natural Philosophy 5 The Virtues and the Road to Heavenly Pleasure 6 Speaking about the Ineffable: The Trinity PART THREE: Toward a Humanist Dialectic 7 Dialectic I: Propositions, the Square of Contraries, Proof and Argument 8 Dialectic II: Forms of Argumentation Conclusion: Valla and "Ordinary Language Philosophy" List of Abbreviations Notes Bibliography

Lodi Nauta is Professor of Medieval and Renaissance Philosophy, University of Groningen, the Netherlands.