On 8 November 1308, the great Franciscan scholastic thinker, John Duns Scotus, died and was buried in the friars' convent in Cologne. Building upon the intellectual heritage of his Franciscan predecessors in Paris, Alexander of Hales and Bonavetnrue of Bagnoregio, Scotus extended this peculiarly Franciscan approach to the philosophical and theological traditions of western Christianity in new and bold directions with unique emphases and implications. These ramifications bevame the foundation for an important alternate current of philosophical thought known through history as Scotism. On the occasion of the 700th anniversary of the death of John Duns Scotus, international scholars from around the world gathered together to celebrate in a comprehensive manner the life, work and intellectual legacy of the Subtle Doctor. This gathering took on the form of a Quadruple Congress, comprising four conferences, treating four different themes, associated with the intellectual journey and legacy of Scotus, namely Oxford, Cologne-Bonn, Strasbourg and the Franciscan Institute at St. Bonaventure University, New York. The corresponding four volumes represent the current state of international Scotus scholarship and will remain an invaluable tool for years to come.Rega Wood, The Subject of the Science of Metaphysics • Michal Chabada, Semantik und Ontologie bei Duns Scotus • Giorgio Pini, Duns Scotus on the Cognition of Essences • Gerhard Leibold / Hans Kraml, Text- und Überlieferungsprobleme der Reportata Parisiensia des J. Duns Scotus • Gabriele Galluzzo, Genus and Differentia in Scotus's Questions on the Metaphysics • Hannes Möhle, Metaphysik und Erkenntniskritik bei Johannes Duns Scotus • Jan A. Aertsen, Scotus’ Konzept des Transzendentalen • Theo Kobusch, Der neue Weg der Metaphysik. Heinrich v. Gent und Scotus • Gérard Sondag, Duns Scot sur les raisons séminales • Dominique Demange, The concept of entitas in Quaest. in Met. VI qu.3 • Simo Knuuttila, Scotus’s Conception of Praedicatio Identica • Oleg Bychkov, Aesthetic Perception and the Cognition of Truth in Duns Scotus • Francesco Fiorentino, The theory of scientific knowledge according to Duns Scotus • Stephen Brown, Is Theology Speculative or Practical? • Axel Schmidt, Duns Scotus und Niels Bohr über Individualität und Unbestimmtheit • Andreas Speer, Metaphysica secundum statum viatoris, Anmerkungen zum epistemologischen Ausgangspunkt der scotischen Metaphysik • Marilyn McCord Adams, Bodies in Their Places, Multiple Location according to Duns Scotus • Roberto Hofmeister Pich, Kontingenz und Erkenntnis, zum Platz der Erkenntnis des Kontingenten innerhalb Scouts’ Wissenschaftstheorie • Cesar Ribas Cezar, Kausalität und Induktion bei Duns Scotus • Robert Andrews, Haecitas in Scotus’ Metaphysics • Peter King, Scotus’s Revision of Anselm, the Two-Will Theory • Timothy Noone, De voluntate eiusque libertate • Giovanni Lauriola, Il big bang divino secondo Duns Scoto • Dominik Perler, Duns Scotus on pain and sadness • Martin Pickavé, Duns Scotus on our Responsibility for our Emotions • Mary Beth Ingham CSJ, De vita beata, Scotus, moral perfection and rational freedom • Tobias Hoffmann, Scotus’s Account of Angelic Sin and Key Features of His Action Theory • Mark Henninger, Scotus and Henry of Harclay on the Contingency of the Will's Beatific Fruition • Jörn Müller, Der Wille und seine Tugenden. Die Transformation der aristotelischen Tugendlehre bei Johannes Duns Scotus • Jan Beckmann, Ontologie oder Geltungsreflexion? Zum Ansatz des scotischen Verständnisses des freien Willens vor dem Hintergrund heutiger neurowissenschaftlicher Problematisierung • Hans Joachim Werner, Der Begriff des malum bei Duns Scotus.