Contents -- Foreword, by Stanley L. Jaki -- Preface -- Part I: The Two Infinites -- 1. Infinitely Small and Infinitely Large (VII, 3-88) -- Actual Infinity in Number and the Immortality of the Soul -- Geometric Arguments against Infinite Divisibility -- Are Invisibles Pure Abstractions? -- The Nature Minimum of a Substance -- Infinite Divisibility: Categorematic and Syncategorematic Infinities -- The Concept of Limit: Maximum and Minimum -- 2. Infinitely Large (VII, 89-157) -- The Scholastic Formulation of the Problem of the Infinitely Large -- The Possibility of the Syncategorematic Infinite -- The Possibility of the Categorematic Infinite: First Attempts -- The Possibility of the Categorematic Infinite: The Doctrine of Gregory of Rimini -- Gregory of Rimini's Adversaries: John Buridan and Albert of Saxony -- Gregory of Rimini's Followers: Nicole Oresme and Marsilius of Inghen -- 3. Infinity in Fifteenth-Century Cosmology: Paul of Venice (X, 392-96) -- Part II: Place -- 4. Theory of Place before the Condemnations of 1277 (VII, 158-202) -- Arabic Theory of Place -- The Questions of Master Roger Bacon -- Albertus Magnus -- Saint Thomas Aquinas -- Giles of Rome -- Graziadei of Ascoli -- Roger Bacon -- The Place of the World in the Firmament: Campanus of Novara and Pierre d'Ailly -- 5. Theory of Place from the Condemnations of 1277 to the End of the Fourteenth Century (VII, 202-302) -- A Proposition Condemned by Etienne Tempier: Richard of Middleton -- John Duns Scotus -- John of Jandun -- The Scotist School -- John of Bassols -- William of Ockham -- Walter Burley -- Nicholas Bonet -- John Buridan -- Albert of Saxony -- Marsilius of Inghen and John Buridan II -- The immobility of Place and God's Immutability: Thomas Wilton, Francis of Mayronnes, Nicholas Bonet, and Nicole Oresme -- 6. Place in Fifteenth-Century Cosmology.

Nicholas of Orbellis (X, 50) -- George of Brussels and Thomas Bricot (X, 79-81) -- Fifteenth-Century Albertists and Thomists (X, 159-60) -- Parisian Doctrines in Germany (X, 204-10) -- Paul of Venice (X, 396-412) -- Part III: Time -- 7. Time (VII, 363-411) -- Time according to John Duns Scotus -- Time according to Peter Aureol -- Time according to William of Ockham -- Time according to William Ockham (continued): The Absolute Clock -- The Analogy between Time and Place: Franciscus de Marchia -- Is the Absolute Clock Arbitrarily Chosen? Walter Burley, John Buridan, Albert of Saxony, and Marsilius of Inghen -- The Atomism of Gerard of Odon and Nicholas Bonet -- Movement and Time according to Nicholas Bonet. Although Continuous in the Mind, Successive Beings Are Discontinuous in Reality -- Time according to Nicholas Bonet: Physical Time and Mathematical Time -- The Problem of the Absolute Clock according to Graziadei of Ascoli -- Conclusion of the Problem of the Absolute Clock -- 8. Time in Fifteenth-Century Cosmology -- Paul of Venice (X, 415-17) -- Part IV: Void -- 9. Void and Movement in the Void (VIII, 7-60) -- The Void and Arabic Philosophy: Ibn Bajja -- The Impossibility of Void and Scholasticism before 1277: Ibn Bajja's Argument. Saint Thomas Aquinas and the Concept of Mass -- The Impossibility of Void and Scholasticism before 1277: The Void and the Plurality of Worlds -- The Condemnations of 1277 and the Possibility of Void -- Godfrey of Fontaines -- Henry of Ghent -- Richard of Middleton -- Ramon Lull -- William Varon -- John Duns Scotus -- Joannes Canonicus -- Petrus Aquilanus -- Robert Holkot -- Walter Burley -- John Buridan -- Albert of Saxony and Marsilus of Inghen -- Nicole Oresme -- Graziadei of Ascoli -- 10. Void in Fifteenth-Century Cosmology -- Nicholas of Orbellis (X, 50-51) -- John Hennon (X, 60-62).

George of Brussels and Thomas Bricot (X, 81-84) -- Parisian Doctrines in Germany (X, 210-13) -- Paul of Venice (X, 417-22) -- Part V: The Plurality of Worlds -- 11. THe Problem of the Plurality of Worlds in Peripatetic Philosophy (I, 230-41) -- Aristotle and the Plurality of Worlds -- The Plurality of Worlds according to Simplicius and Averroes -- 12. The Problem of the Plurality of Worlds in Scholastic Philosophy (IX, 363-430) -- Scholasticism and the Plurality of Worlds before the Condemnations of 1277. The Plurality of Worlds and the Void: Michael Scot, William of Auvergne, and Roger Bacon. The Plurarlity of Worlds and the Change in Weight according to Its Distance from the Center of the World: Albertus Magnus and Saint Thomas Aquinas -- The Plurality of Worlds and the Condemnations of 1277: Godfrey of Fontaines, Henry of Ghent, Richard of Middleton, and Giles of Rome -- William Varon, John of Bassols, and Thomas of Strasburg -- John of Jandun -- William of Ockham and Robert Holkot -- John Buridan and Albert of Saxony -- Oxford University and the Assimilation of Weight to Magnetic Attraction -- The Return to Platonic Theory of Weight: Nicole Oresme -- The Spot on the Lunar Disk (The Man on the Moon) -- 13. The Plurality of Worlds in Fifteenth-Century Cosmology -- John Hennon (X, 70-72) -- George of Brussels and Thomas Bricot (X, 94-95) -- Paul of Venice (X, 437-440) -- John Major (Etudes II, 92-94) -- Gaetano of Thienis (Etudes II, 415-16) -- Nicholas of Cusa (X, 319-24) -- Notes -- Bibliography of Works Cited by Duhem (with References to Modern Editions and English Translations) -- Selected Duhem Bibliography: Historical and Philosophical Works -- Selected Bibliography of Works on Medieval Physical Sciences after Dunhem -- Index.