John Buridan, Quaestiones super octo libros Physicorum Aristotelis (secundum ultimam lecturam)

Michiel Streijger (Ph.D. 2008) is a researcher at the Bavarian Academy of Sciences and Humanities in Munich. He is working on an edition of book II of Robert Cowton's commentary on the Sentences of Peter Lombard.Paul J.J.M. Bakker (Ph.D. 1999) is Professor of Medieval and Renaissance Philosophy at Radboud University. His research focuses on the commentary tradition on Aristotle's works on natural philosophy, from the late Middle Ages to the seventeenth century.Edith D. Sylla (Ph.D. 1971) is Professor Emerita at North Carolina State University (Raleigh, North Carolina). She works on the history of mathematics, physics, and their interrelations from the late Middle Ages to the early eighteenth century.

"En résumé, le livre qui nous est proposé est un outil indispensable pour la recherche sur la philosophie naturelle médiévale et on ne peut que souhaiter une parution prochaine, sous la même forme, de la suite de cette édition critique." / [In summary, the book that is offered to us is an essential tool for the research on medieval natural philosophy and we can only hope for a next publication, in the same form, of the rest of this critical edition.] - Jean Celeyrette, Université de Lille 3, in: Archives de Philosophie, cahier 2018/3, tome 81 (Automne – Juillet-septembre 2018), p.666-668."The present volume continues the groundbreaking work of the editorial team that produced the critical edition of books 1–2 of Buridan’s Quaestiones on the Physics in 2015. [...] All in all, this edition is an extremely valuable contribution to the history of medieval philosophy and medieval science. Scholars will be using this key source text for many years to come." - Jack Zupko, University of Alberta, in: Renaissance Quarterly, LXXI:1 (2018), pp. 264-265"L’ensemble constitue [...] un instrument de première importance, indis- pensable tant pour les amateurs de la pensée buridanienne que pour les historiens de la physique médiévale." / [The ensemble is an instrument of primary importance, indispensable for anyone interested in Buridan's ideas and historians of medieval physics.] - Joël Biard, Université François-Rabelais, Tours, France, in: Vivarium 55 (2017) 361-370

• Introduction xiPaul J.J.M. Bakker and Michiel StreijgerGuide to the Text xxEdith D. Sylla1 Introduction xx2 Authors of Questions on Books III and IV of the Physics Related to Buridan’s Questions xxvi3 The Questions on Book III xli3.1 Buridan’s Questions on Motion: Questions III.1–13 xliv3.2 Buridan’s Questions on Infinity: Questions III.14–19 cxiv4 The Questions on Book IV cliii4.1 Buridan’s Questions on Place: Questions IV.1–6 cliv4.2 Buridan’s Questions on the Vacuum: Questions IV.7–11 clxxiv4.3 Buridan’s Questions on Time: Questions IV.12–16 cxciii5 Conclusion (and Warning to the Reader) ccixBibliography ccxiIohannis Buridani, Quaestiones super octo libros Physicorum Aristotelis (secundum ultimam lecturam)Libri III–IVConspectus siglorum et compendiorum 2Liber IIITabula quaestionum tertii libri Physicorum 4III.1. Utrum necesse sit ignorato motu ignorare naturam 8III.2. Utrum ad alterationem requiratur fluxus distinctus ab alterabili et a qualitate secundum quam est alteratio 15III.3. Utrum qualitates contrariae, ut albedo et nigredo, caliditas et frigiditas, possint se compati simul in eodem subiecto secundum aliquosgradus ipsarum 21III.4. Utrum qualitas secundum quam est alteratio per se et proprie dicta, continua et temporalis, acquiratur tota simul vel pars post partem 37III.5. Utrum in alteratione pars qualitatis quae prius acquiritur maneat cum parte quae posterius acquiritur 45III.6. Utrum motus localis sit vel utrum haec sit vera ‘motus localis est’ 60III.7. Utrum motus localis sit res distincta a loco et ab eo quod localiter movetur 73III.8. Utrum de necessitate motus localis sit habere terminos positivos praeter fluxum, scilicet terminum a quo et terminum ad quem 81III.9. Utrum motus sit de essentia termini ad quem est 91III.10. Utrum omnis motus sit actus entis in potentia 99III.11. Utrum definitio motus sit bona in qua dicitur quod motus est actus entis in potentia secundum quod in potentia 104III.12. Utrum omnis motus sit subiective in mobili vel movente vel in utroque 110III.13. Utrum omnis actio sit passio et econtra 115III.14. Utrum sit aliquod corpus sensibile actu infinitum 122III.15. Utrum sit aliqua magnitudo infinita 133III.16. Utrum linea aliqua gyrativa sit infinita 142III.17. Utrum omni numero sit numerus maior 153III.18. Utrum in quolibet continuo infinitae sint partes 166III.19. Utrum possibile sit infinitam esse magnitudinem et in infinitas partes lineam esse divisam 186Liber IVTabula quaestionum quarti libri Physicorum 201IV.1. Utrum omnis locus sit aequalis locato suo 204IV.2. Utrum locus sit terminus corporis continentis 211IV.3. Utrum locus sit immobilis 222IV.4. Utrum definitio loci quam assignat Aristoteles sit bona, qua dicitur ‘locus est terminus corporis continentis immobilis primum’ 233IV.5. Utrum terra sit in aqua sive in superficie aquae tamquam in loco suo proprio et naturali 238IV.6. Utrum ultima sphaera, scilicet suprema, sit in loco 253IV.7. Utrum possibile sit vacuum esse 258IV.8. Utrum possibile sit esse vacuum per aliquam potentiam 267IV.9. Utrum in motibus gravium et levium ad sua loca naturalia tota successio proveniat ex resistentia medii 271IV.10. Utrum, si vacuum esset, grave moveretur in eo 292IV.11. Utrum rarefactio et condensatio sint possibiles vel utrum possibile sit aliquid rarefieri vel condensari 299IV.12. Utrum tempus sit motus 306IV.13. Utrum definitio temporis in qua dicitur ‘tempus est numerus motus secundum prius et posterius’ sit bona 313IV.14. Utrum cuiuslibet motus tempus sit mensura 320IV.15. Utrum quies mensuretur tempore 337IV.16. Utrum tempus esset, quamvis non esset aliqua anima intellectiva 343Index locorum 349Index codicum manu scriptorum 353Index nominum 355