Simone Guidi

Consiglio Nazionale Delle Ricerche
  • One of the hardest challenges in the study of indignation is chiefly terminological. If we take it in its contemporary meaning — “anger about a situation that you think is wrong or not fair”— the concept of ‘indignation’ does not seem to be entirely part of the ancient Greek conceptual arsenal. Rather, it results from the diachronic overlap of two similar but different Greek concepts. One, that of nemesis (‘indignation’), directly reprised from Greek philosophical culture. Another, that of thumo…Read more
  • L’indignazione e le sue forme dall’antichità all’Ottocento (edited book)
    Rivista di Storia della Filosofia. 2026.
    Intento di questo numero di «Rivista di storia della filosofia» è offrire un campionario e un network di casi di studio, volti a ricostruire i principali passaggi della storia dell'indignazione dall’antichità all’Ottocento, passando per le sue principali trasformazioni e rimodulazioni / The aim of this issue of "Rivista di storia della filosofia" is to provide a selection of case studies and a network of examples designed to trace the main developments in the history of indignation from antiquit…Read more
  • This article examines how Italian physicians between the 16th and 18th centuries developed a logic of ‘intermediate states’ between health and disease. Moving from late Scholastic Galenism to early mechanistic medicine and through a genealogical counter-history of the concept of health as developed by the World Health Organization, it shows how a dynamic view of the body allowed physicians to describe overlapping configurations of healthy and morbid states. Particular attention is given to the c…Read more
  •  24
    Descartes on Indignation, Envy, and Anger
    Rivista di Storia Della Filosofia 1 91-118. 2026.
    In this paper, the author analyzes Descartes’ treatment of indignation in Les passions de l’âme. He puts forth his analysis in light of the diachronic history of the notion of indignation, and in particular of the co-existence of two notions related to this feeling: Aristotle’s nemesis and the Latin indignatio. While Descartes subscribes to a view of indignation that is in continuity with indignatio, thus associating this passion to hatred and anger, he also retains some elements from nemesis, n…Read more
  •  28
    Marin Cureau de La Chambre’s Theory of Extension and Its Scholastic Background
    International Philosophical Quarterly 65 (1): 67-90. 2025.
    By analysing his works from 1634 to 1666, I map out Cureau de La Chambre’s theory of universal extension. I focus in particular on what he borrowed from his contemporaries, especially his synthesis of Scaliger’s doctrine of the extension of spiritual substances and Suárez’s notion of extensio entitativa, a pre-categorial extension attributed to bodily parts prior to categorial continuous quantity. I reconstruct both his overall metaphysical account of extension and his specific positions on the …Read more
  •  15
    In the development of early modern science, Aristotelian-scholastic natural philosophy provided crucial tools for understanding epistemology, logic, and cosmology, including key insights on quantification and mathematics, qualities, force, matter, atomism and corpuscularianism, the material continuum, and infinity. The new natural philosophy drew on philosophical instruments developed by medieval and postmedieval thinkers, often used to conceive of novelties. The technical and scientific vocabul…Read more
  •  842
    This special issue of Aristotelica simultaneously integrates two aspects and historiographical perspectives. While investigating the development and reconceptualization of Aristotelian notions in early modern natural philosophy, this collection of papers emphasizes, in particular, the role of terminology and its historical shifts. Without claiming completeness – but in the hope of fostering new research in this combined field of studies – we examined a number of relevant case studies from differ…Read more
  •  290
    Otherness, Plurality and Numerical Individuation in Aquinas’s Super Boetium de Trinitate
    Medioevo - Rivista di Storia Della Filosofia Medievale 50 107-145. 2025.
    In this paper I grapple with part 2, question 4 of Aquinas’s commentary on Boethius’s De Trinitate, in order to shed light on understudied textual passages, and to offer an original account of Aquinas’s view of individuation and its relationship to Boethius’s. I focus in particular on his account of Boethius’s claim that otherness is the cause of plurality. I argue that Aquinas definitively overcomes some Neoplatonic elements of Porphyry’s view, which Boethius’s understanding of alteritas still …Read more
  •  300
    Lux sive qualitas. Incorporeità ed estensione della luce nell’aristotelismo iberico e italiano di primo Seicento
    Galilaeana. Studies in Renaissance and Early Modern Science 15 61-81. 2018.
    This article addresses the Aristotelian debate in the 17th century on the incorporeality of light and its extension, focusing especially on the Iberian and Italian contexts. The aim of the essay is to show that, while late Aristotelianism unitedly rejected light’s corporeity, many differences arose regarding the way in which this incorporeality should be understood. Relevant perspectives in all of their discussions were Scotus’ teaching of the intentional nature of light, and the Neoplatonics’ c…Read more
  •  702
    In this article, I deal with the role of hypothesis in the scientific methodology of Isaac Newton, Francis Bacon and René Descartes. The first paragraph is about hypothesis in Newton's lexicon, especially trying to understand the meaning of his famous hypotheses non fingo. The second paragraph deals with Bacon's methodology, arguing especially that his epis-temology was the first to propose an artificial way for inductive inferences, also giving up all hypothesis in science. The third paragraph …Read more
  •  580
    This paper delves into a pivotal issue of scholastic angelology, the problem of angelic self-knowledge. It compares positions ranging from Thomas Aquinas’s to João Poinsot’s. I stress in particular what I dub ‘the problem of immanent knowledge in presence’, i.e. the problem of the actual, immanent and presential interplay between the angelic intellect and the angelic substance, which Aquinas sees as the rationale for angelic self-knowledge. I then discuss the perspectives of Cajetan and Vázquez,…Read more
  •  1103
    Descartes and the 'Thinking Matter Issue'
    Lexicon Philosophicum 10 (10): 181-208. 2022.
    In this paper, I aim to address a specific issue underpinning Cartesian metaphysics since its first public appearance in the Discourse right up until the Meditations, but which definitely came to the surface in the Second and Fifth Replies. It involves the possibility that to be thinking and to be extended do not actually contrast as two entirely different properties; hence, these two essences cannot serve as the basis for a disjunctive, real distinction between two corresponding substances, the…Read more
  •  268
    In this chapter I argue that the general category of 'iatromechanics' conceals different views about how mathematics and mathematical physics should be applied in medicine, and thereby about how physiology should be quantified and mathematized. Mechanism, quantification and mathematization are indeed different, albeit interrelated, notions, which overlap without ever coming to be identical, and all of which depend upon the overall epistemological debate over the method for finding truth in scien…Read more
  • This volume sets out to chart a path at the intersection between the histories of medicine and philosophy concerning a topic that is prominent in contemporary debates, i.e. the translation of physiology, and accordingly pathology, into numerical terms. In particular, the book discusses and contextualizes issues that are simultaneous of medical and philosophical import, such as the quantification of temperaments and complexions, the quantification of life processes and physiology, the quantificat…Read more
  •  40
    This edited volume explores the intersection of medicine and philosophy throughout history, calling attention to the role of quantification in understanding the medical body. Retracing current trends and debates to examine the quantification of the body throughout the early modern, modern and early contemporary age, the authors contextualise important issues of both medical and philosophical significance, with chapters focusing on the quantification of temperaments and fluids, complexions, funct…Read more
  •  820
    The Truth We Know. Reassessing Suárez’s Account of Cognitive Truth and Objective Being
    Mediaevalia. Textos E Estudos 39 (39-40): 297-334. 2020.
    This article aims at reassessing a widespread view, according to which Francisco Suárez left behind the scholastic model of truth as adaequatio, founding a new concept of truth based on his metaphysics of objective being. In the first part, I reconstruct the debate on the complex and incomplex truth, focusing especially on the sources of Suárez’s Disputation 8, and presenting the views of Aquinas, Henry of Ghent, Hervaeus, Durandus, Capreolus and Fonseca. Especially the latter proposes an eclect…Read more
  •  322
    What does Descartes's embryology look, if related to the Scholastic theories of his time? In order to reply to this question, the present chapter aims at sketching a portrait of the embryological epigenetics Descartes could find in his recognized Scholastic sources (the Commentaries on Aristotle by Toledo, the Coimbra Jesuits, Suárez, and Rubio, as well as the Summae by Eustachius a Sancto Paulo and Abra de Raçonis), a tradition that received and incorporated in the Aristotelian-Galenic body man…Read more
  •  361
    In this paper, I address Francisco Suárez's solution to the problem of the angelic assumption of artificial bodies, dealing in particular with the discussion in his De Angelis (book 4, chapters 33-39). The peculiarity of Suárez's approach lies, in particular, in the fact that it is one of the last major attempts to reformulate scholastic angelology from the ground up, taking into account the new spirit of the Counter-Reformation. Despite this goal, Suárez consistently discusses these issues taki…Read more
  •  1352
    In this paper I focus on the historiographical fate of Francisco Suárez (1548–1617) and Pedro da Fonseca (1528–1599) in two Iberian journals ran by Jesuits and founded in 1945: the Spanish Pensamiento, and the Portuguese Revista portuguesa de filosofia. I endeavor to show that the discussions of Suárez’s and Fonseca’s ideas on these journal is a two-sided case of constructing the legacies of major figures in late scholasticism, and I emphasize how the demand to identify cultural national heroes …Read more
  •  493
    Pedro da Fonseca on Substance, Subsistence, and Supposit
    In Simone Guidi & Mario Santiago Carvalho (eds.), Pedro da Fonseca: Humanism and Metaphysics, Brepols. 2023.
    Twenty years before Suárez’s Metaphysicae disputationes, Pedro da Fonseca offered one of the most impressive modern attempts to reorder Aristotle’s Metaphysics. In the present chapter, I will endeavour to show how insightful Fonseca’s effort truly was, by dealing with his ousiology. I will focus especially on the Jesuit’s account of three pivotal concepts in the scholastic theory of substance, i.e. Divine Substance, created substance and prime substance, or supposit. These notions are primarily …Read more
  •  63
    This volume is the first collection of essays in English devoted to Pedro da Fonseca SJ (1527-1599), his intellectual endeavour, and thought. The book brings together some of today's leading specialists in early modern scholasticism, Portuguese Aristotelianism, and the history of the Society of Jesus, in order to present a reliable portrait of Fonseca's institutional role, to reconstruct his thought on many important aspects of scholastic metaphysics, and to discuss the reception of his work in …Read more
  •  845
    Second Scholasticism greatly developed the medieval theory of continuous quantity as the Aristotelian notion for thematizing spatial extension, paving the way for the idea of space as extension in early modern natural philosophy. The article analyzes the section related to the category of continuous quantity in the Coimbra commentary on the Dialectics (1606), showing that it is indebted to the novel theory of Francisco Suárez on quantity as bestowing extension to a body in a particular sense, so…Read more
  • Conimbricenses Encyclopedia (edited book)
    Instituto de Estudos Filosóficos. 2020.
  •  836
    In this paper I reconstruct and discuss Antonio Rubio (1546-1615)’s theory of the composition of the continuum, as set out in his Tractatus de compositione continui, a part of his influential commentary on Aristotle’s Physics, published in 1605 but rewritten in 1606. Here I attempt especially to show that Rubio’s is a significant case of Scholastic overlapping between Aristotle’s theory of infinitely divisible parts and indivisibilism or ‘Zenonism’, i.e. the theory that allows for indivisibles, …Read more
  •  576
    Themed Section of Bruniana & Campanelliana 2022/1, pp. 85-198 - Simone Guidi, Introduction; - Andrew W. Arlig, Part-Whole Interdependence and the Presence of Form in Matter According to Some Fifteenth-Century Platonists; - Jean-Pascal Anfray, Aux limites de la métaphysique: parties, indivisibles et contact chez Suárez; - Simone Guidi, Indivisibles, Parts, and Wholes in Rubio’s Treatise on the Composition of Continuum (1605); - Dana Jalobeanu, Dissecting Nature ad vivum: Parts and Wholes in F…Read more
  •  812
    In this paper I reconstruct and discuss Antonio Rubio (1546-1615)’s theory of the composition of the continuum, as set out in his Tractatus de compositione continui, a part of his influential commentary on Aristotle’s Physics, published in 1605 but rewritten in 1606. Here I attempt especially to show that Rubio’s is a significant case of Scholastic overlapping between Aristotle’s theory of infinitely divisible parts and indivisibilism or ‘Zenonism’, i.e. the theory that allows for indivisibles, …Read more