This book offers a detailed study of the political philosophies of Thomas Hobbes and Benedict de Spinoza, focussing on their concept of power as potentia, concrete power, rather than power as potestas, authorised power. The focus on power as potentia generates a new conception of popular power. Radical democrats–whether drawing on Hobbes's 'sleeping sovereign' or on Spinoza's 'multitude'–understand popular power as something that transcends ordinary institutional politics, as for instance popular plebsites or mass movements. However, the book argues (...) that these understandings reflect a residual scholasticism which Hobbes and Spinoza ultimately repudiate. Instead, on the book's revisionist conception, a political phenomenon should be said to express popular power when it is both popular (it eliminates oligarchy and encompasses the whole polity), and also powerful (it robustly determines political and social outcomes). Two possible institutional forms that this popular power might take are distinguished: Hobbesian repressive egalitarianism, or Spinozist civic strengthening. But despite divergent institutional proposals, the book argues that both Hobbes and Spinoza share the conviction that there is nothing spontaneously egalitarian or good about human collective existence. From this point of view, the book accuses radical democrats of pernicious romanticism; the slow, meticulous work of organizational design and maintenance is the true centre of popular power. Three minute video summary available via HPBin3. Extended discussion on The Political Theory Review podcast. First chapter open access available via Oxford Scholarship Online. Videos of book talks at National University of Singapore (Centre for Legal Theory) and Universidad de Buenos Aires (Instituto de Investigaciones Gino Germani) available via YouTube. (See links below.). (shrink)

This article aims to interpret Leibniz’s dynamics project through a theory of the causation of corporeal motion. It presents an interpretation of the dynamics that characterizes physical causation as the structural organization of phenomena. The measure of living force by mv2 must then be understood as an organizational property of motion conceptually distinct from the geometrical or otherwise quantitative magnitudes exchanged in mechanical phenomena. To defend this view, we examine one of the most important theoretical discrepancies of Leibniz’s dynamics with (...) classical mechanics, the measure of vis viva as mv2 rather than ½ mv2. This “error”, resulting from the limits of Leibniz’s methodology, reveals the systematic role of this quantity mv2 in the dynamics. In examining the evolution of the quantity mv2 in the refinement of the force concept from potentia to actio, I argue that Leibniz’s systematic limitations help clarify dynamical causality as neither strictly metaphysical nor mechanical but a distinct level of reality to which Leibniz dedicates the “dynamica” as “nova scientia”. (shrink)

It is argued that quantum theory is best understood as requiring an ontological duality of res extensa and res potentia, where the latter is understood per Heisenberg’s original proposal, and the former is roughly equivalent to Descartes’ ‘extended substance.’ However, this is not a dualism of mutually exclusive substances in the classical Cartesian sense, and therefore does not inherit the infamous ‘mind-body’ problem. Rather, res potentia and res extensa are proposed as mutually implicative ontological extants that serve to (...) explain the key conceptual challenges of quantum theory; in particular, nonlocality, entanglement, null measurements, and wave function collapse. It is shown that a natural account of these quantum perplexities emerges, along with a need to reassess our usual ontological commitments involving the nature of space and time. (shrink)

The European Hobbes Society Online Colloquium featured my book, Potentia: Hobbes and Spinoza on Power and Popular Politics. This is a précis of the book.

The main goal of this paper is tocompare how Thomas Aquinas expressedhis doctrine of providence through second-ary causes, making use of both Aristotelianand Neo-Platonic principles, in the seventharticle of the third question of his Quaes-tiones Disputatae De Potentia Dei and his Super Librum de Causis Expositio , in whichhe intends to solve the problem of themetaphysical mechanism by which God providentially guides creation. I will rst present his arguments as they appear inthe disputed questions, followed by a pre-sentation of (...) his thought on the matter inhis commentary of the Liber de Causis , andconcluding with my comparative analysisof Aquinas’ solution to the issue of God’sprovidential activity in nature. (shrink)

The European Hobbes Society Online Colloquium featured my book, Potentia: Hobbes and Spinoza on Power and Popular Politics, with critical commentaries from Alissa MacMillan, Chris Holman, and Justin Steinberg. This is my response to their commentaries.

In the Aristotelian tradition, there are two broad answers to the basic question "What is soul?" On the one hand, the soul can be described by what it does. From this perspective, the soul seems to be composed of various different parts or powers (potentiae) that are the principles of its various actions. On the other hand, the soul seems to be something different, namely, the actual formal principle making embodied living substances to be the kinds of things that they (...) are. Contemporary Aristotelians are split on how to interpret Aristotle: Anna Marmodoro (2013, 18), Thomas Johansen (2012, 81), and most others argue that the soul is nothing but a kind of cluster or group of powers. Rebekah Johnston (2011), however, strongly disagrees and argues that the soul is only the actual principle of embodied substance. Aquinas provides a novel and neglected solution to this problem and would argue that both sides are partly right but that either side is insufficient without the other. (shrink)

Preface -/- 1. 'Anima' and 'res cogitans'. The Cartesian idea of nature and mind as a residual concept. The first chapter discusses the genesis of the concept of mind in Cartesian Philosophy; the claim is advanced that 'res cogitans' is a residual concept, defined on the basis of a previous definition of matter as 'res extensa'. As a consequence, a contradictory ontology of the mind is Descartes's poisoned bequest to the following tradition of 'scientific' psychology. -/- 2. The Mathematical method (...) in the theory of the mind and the passions. The second chapter discusses the first ambitious attempt in this direction, namely Spinoza's theory of the mind and the passions in Ethics II and III; the topics treated are Spinoza's program of a mathematical science of the mind and his transformation of the genre 'treatise of the passions' into a would-be mathematical science of the motions of the soul. -/- 3. The definition of affections and the impossibility of reducing inadequate to adequate ideas. The third chapter discusses a tension in Spinoza project of a theory of the passions, namely a need to reduce concepts to pure mathematical definitions and the opposite need to keep inadequate imaginative definitions of the phenomena under scrutiny, namely the passions, in order to avoid a radical reduction of the subject-matter to the only truly existing reality (the world order in itself) that would leave the theory without any subject-matter at all. -/- 4. 'Conatus', 'potentia', 'vis'. Concepts of force in the theory of passions and the impossibility of eliminating occult qualities. The fourth chapter discusses the troubles arising in the original project deriving from difficulties in the treatment of dynamic concepts, such as the notion of conatus, which were an unavoidable consequence of Cartesian assumptions. -/- 5. Overview and discussion. Chapter five tries to draw a general discussion, focusing on the tension between the Cartesian assumptions and the actual practice in the new post-Galilean sciences, including attempts at giving birth to psychology or science of man. -/- Appendices I. The mind-body problem in Spinoza. II. Concepts of force in Newton and Spinoza. III. Materialist readings of Newton and Spinoza. IV. On the opposition of materialism and spiritualism and Geisteswissenschaften and natural science. V. Conatus, the idea of liberation and social theory in Spinoza. (shrink)

Spinoza's use of the phrase “sui iuris” in the Tractatus Politicus gives rise to the following paradox. On the one hand, one is said to be sui iuris to the extent that one is rational; and to the extent that one is rational, one will steadfastly obey the laws of the state. However, Spinoza also states that to the extent that one adheres to the laws of the state, one is not sui iuris, but rather stands under the power [sub (...) potestate] of the state (TP 3/5). It seems, then, that to the extent that one is sui iuris, one will not, in fact, be sui iuris. In this paper, I offer an interpretation of Spinoza's notion of being sui iuris that enables us to overcome this paradox and sheds light on Spinoza's relationship to the republican tradition. I work towards this goal by distinguishing between two ways in which Spinoza uses the locution, which correspond to two different conceptions of power: potentia and potestas. This distinction not only allows us to save Spinoza from internal inconsistency, it also enables us to see one important way in which Spinoza stands outside of the republican tradition, since he conceives of liberty not as constituted by independence, or citizenship in a res publica, but as being sui iuris in the first sense described above: being powerful. (shrink)

Attempts to solve the issue of divine action in nature have resulted in many innovative proposals seeking to explain how God can act within nature without disrupting the created order but introducing novelty in the history of the universe. My goal is to show how Aquinas' doctrine of providence, mainly as expressed in his De Potentia Dei, fulfils the criteria for an account of divine action: that God's action is providential in the sense that God is involved in the (...) individual and particular here and now. -/- . (shrink)

q. 16 of John of Naples’ Quodlibet III – Utrum dolor vel passio damnatae animae separatae sit, sicut in subiecto immediato, in eius essentia vel potentia – evokes one of the most delicate debates, both from a theological and philosophical point of view, of scholastic eschatology between the end of the 13th century and the first decades of the 14th: that relating to the action of hellfire (considered, due to the auctoritas of Gregory the Great, corporeal and identical in (...) essence to sublunar fire) on an immaterial reality such as the soul in its state of separation (i.e. in the period between the individual death and the final judgement). The article retraces the way in which (in the well-known q. 2 of Quodlibet VI) John of Naples defends Thomas Aquinas from the suspicion of incurring, with his position, the condemnations of Tempier in 1270 and 1277, and how Aquinas himself tries to explain (especially in q. 26 of his Quaestiones disputatae de veritate) the passio or pain of the soul (both in the state of separation and in that of conjunction), through the double distinction between passio corporalis and passio animalis, and, within the former, between laesio and experimentalis perceptio laesionis. It then analyses q. 16 of Quodlibet III, in which John of Naples identifies the rational appetite – i.e. the will – as the immediate subject of the separate soul’s pain. In the appendix, an edition of John’s question is provided on the basis of the manuscripts Napoli, Biblioteca Nazionale, VII.B. 28 (= N) and Tortosa, Biblioteca de la Catedral, 244 (= T). (shrink)

In this paper, I inspect the grounds for the mature Spinozist argument for substance monism. The argument is succinctly stated at Ethics Part 1, Proposition 14. The argument appeals to two explicit premises: (1) that there must be a substance with all attributes; (2) that substances cannot share their attributes. In conjunction with a third implicit premise, that a substance cannot not have any attribute whatsoever, Spinoza infers that there can be no more than one substance. I begin the inspection (...) with the analysis of the first premise, which is provided in the form of the four proofs of God’s existence in Ethics Part 1, Proposition 11. While demonstrating how Spinoza adopts a progressive approach, where the fourth proof of God’s existence is more successful and persuasive than the third, which is more successful than the second, etc., I also unpack concepts central to Spinoza’s thinking here, including the concepts of reason (ratio) and power (potesta or potentia). I then analyze the second premise of the Spinozist argument for substance monism, as established by Ethics Part 1, Proposition 4 in conjunction with Ethics Part 1, Proposition 5. I take up and respond to the objection attributed to Leibniz that a substance p can have the attributes x and y and a substance q can have the attributes y and z, and thus that substances can share some attributes while remaining distinct. Throughout the study, my attention is focused on the argumentative procedures Spinoza adopts. This yields a close, internalist reading of the text where Spinoza effectively embraces substance monism. In conclusion to this study, I underscore to the originality of Spinoza’s argument for seventeenth century theories of substance. (shrink)

Interest in “the flesh” (Leib, la chair) in phenomenological research leads to revealing the original (ursprünglich) and non-phenomenal essence of the very appearance. Contemporary phenomenological aesthetics is heading in the same direction. While describing the intentional content of particular, i.e. subjectively “embodied” aesthetic objects, it reveals the ultimate origin (Ursprung) thanks to which the appearance of phenomena is possible at all. At the same time, revealing the ultimate origin — differently named but always meaning the furthest horizon of the possibility (...) of the appearance of phenomena — sometimes claims to be called “first philosophy”. However, such ambitious cognitive aspirations of phenomenological aesthetics may arouse suspicion. This is why, first, we should ask about its differentia specifica and its position among other types of aesthetics, and then consider whether its most significant essential statements are not just as insightful as questionable. I argue for admitting that phenomenological aesthetics has the broadest cognitive horizon and at the same time for limiting its validity for individual actualizations (concretions) of potentiality (potentia) of given phenomena. I also point out that the basic cognitive procedure within phenomenological aesthetics is reductive reasoning, which goes in the opposite direction to logical entailment. (shrink)

In Ethics 4, Spinoza argues that “A free man thinks of nothing less than of death, and his wisdom is a meditation on life, not on death” (E4p67). Spinoza’s argument for this claim depends on his view of imagination, reason, and scientia intuitiva and on his notion of conatus. I explicate Spinoza’s view of life in terms of power (potentia) and show that Spinozan death amounts to reconfiguration rather than absolute annihilation. I then show that E4p67 reflects Spinoza’s well-known (...) account of the three kinds of knowing. Thinking of death is quintessentially imaginative and passive. The free person of E4p67 is in contrast a rational person. To reason, and as becomes especially clear E5, to experience scientia intuitiva, moreover is to think of things “without any relation to time, but [rather] sub specie aeternatitis”(E2p44c2) and to experience activity To the extent, then, that we are rational, free, and active, death is a non-issue. Indeed, to the extent that we are able to meditate on life sub specie aeternitatis, we actually experience joy, love (E5p20s, p32c), eternity (Sp23s), and “the greatest satisfaction of the Mind” (E5p27). (shrink)

In addition to the notion of power (potentia), Spinoza employs the notion of power of acting (agendi potentia), especially in the Ethics. This raises the question, if Spinoza uses both ‘power’ and ‘power of acting’, what is the difference between the two? What else could power be, for Spinoza, but power of acting? What is the relationship between power and activity in his system? This essays aims at giving answers to these questions; thereby emerges what may be called (...) an actualist model of God’s power. (shrink)

Composta attorno al 1065-1067, la lettera "Sull’onnipotenza divina" di Pier Damiani si apre con una questione posta da Desiderio, abate di Montecassino: «Sebbene Dio possa ogni cosa, non può restituire la verginità a colei che l’ha perduta. Egli ha certamente il potere di liberarla dalla pena, ma non può ridarle la corona della verginità che ha perduto». Il problema, che Pier Damiani riprendeva dalla lettera XXII di san Gerolamo, è solo in apparenza ozioso: il monaco ravennate ne fa un’autentica questione (...) filosofica, un “esperimento mentale” che solleva domande cruciali sulla natura del tempo e sul rapporto tra necessità e contingenza, leggi divine e princìpi logici, natura divina e natura umana. Il volume, a cura di Roberto Limonta, presenta la traduzione del De divina omnipotentia con note e testo latino a fronte. La prefazione di Mariateresa Fumagalli Beonio Brocchieri e il saggio introduttivo di Roberto Limonta ricostruiscono la lunga durata della questione posta da Pier Damiani, dai dibattiti teologici dei secoli medievali sino alle sue fortune nella filosofia, teologia e letteratura contemporanea. (shrink)

The paper discusses the role of the concepts of conatus, potentia, vis in Spinoza's project of a new science of the Galilean kind of the passions of the mind and of men’s way of living. I argue that he tries to work out a dynamic – as contrasted with kinematic – approach to psychology.

In this paper, I explore the link between consciousness and quantum mechanics. Often explanations that invoke consciousness to help explain some of the most perplexing aspects of quantum mechanics are not given serious attention. However, casual dismissal is perhaps unwarranted, given the persistence of the measurement problem, as well as the mysterious nature of consciousness. Using data accumulated from experiments in parapsychology, I examine what anomalous data with respect to consciousness might tell us about various explanations of quantum mechanics. I (...) examine three categories of quantum mechanics interpretations that have some promise of fitting with this anomalous data. I conclude that explanations that posit a substratum of reality containing pure information or potentia, along the lines proposed by Bohm and Stapp, off er the best fit for various categories of this data. (shrink)

Thomas Hobbes has been hailed as the philosopher of power par excellence; however, I demonstrate that Hobbes’s conceptualization of political power is not stable across his texts. Once the distinction is made between the authorized and the effective power of the sovereign, it is no longer sufficient simply to defend a doctrine of the authorized power of the sovereign; such a doctrine must be robustly complemented by an account of how the effective power commensurate to this authority might be achieved. (...) Nor is this straightforward: for effective political power can fluctuate, sometimes severely. In this light, the prevalent juridical reading of Hobbes’s political philosophy is inadequate. (shrink)

Eshel Ben-Jacob’s manuscript entitled ‘Bacterial wisdom, Gödel’s theorem and creative genomic webs’ summarizes decades of work demonstrating adaptive mutagenesis in bacterial genomes. Bacterial genomes, each an essential part of a Kantian whole that is a single bacterium, are thus not independent of the environment as sensed; and a single bacterium is therefore a semiotic entity. Ben-Jacob suggests this but errs in 1) assigning autonomy to the genome, and 2) analogizing through computation without making clear whether he is doing so for (...) illustrative purposes or making committed ontological propositions. We reinterpret adaptive mutagenesis and related phenomena in ways both metaphysically rigorous and revealing. We conclude that bacteria are much farther removed from the ‘self-organizing’ world of inanimate process than from the Peircian world of signs; and a critical reappraisal of existing knowledge can enhance our understanding of selfhood, semiosis, and the roots of subjective experience. (shrink)

У статті досліджується стосунок києво-могилянських філософських курсів XVII–XVIIІ ст. до аристотелівської традиції. Спочатку виставлено критерії, за якими його можна оцінити. Виділено два основних типи критеріїв: суб’єктивні і об’єктивні. Відповідно до перших, могилянці чітко визначали свою філософію як аристотелівську, перипатетичну або ad mentem Aristotelis. Є багато аристотелівських елементів в змісті та в структурі курсів, що задовольняють об’єктивні критерії. Так, логіка і фізика структуровані відповідно до традиційного порядку книг Аристотеля з цієї тематики. Всі основні концепти (ens, essentia і existentia; actus і (...) class='Hi'>potentia; materia і forma; чотири причини; 10 категорій тощо), на які спираються могилянські професори, походять від Аристотеля. У статті доводиться, що аристотелівські елементи прийшли в могилянські курси через схоластичну традицію, насамперед з єзуїтських філософських курсів того часу. Однак в окремих випадках, як-от лекціях Теофана Прокоповича, можна помітити глибшу обізнаність з творами Аристотеля. (shrink)

Spanish translation of Field, S. L. (2014). 'Hobbes and the question of power'. Journal of the History of Philosophy, 52(1), 61-86. Thomas Hobbes has been hailed as the philosopher of power par excellence; however, I demonstrate that Hobbes’s conceptualization of political power is not stable across his texts. Once the distinction is made between the authorized and the effective power of the sovereign, it is no longer sufficient simply to defend a doctrine of the authorized power of the sovereign; such (...) a doctrine must be robustly complemented by an account of how the effective power commensurate to this authority might be achieved. Nor is this straightforward: for effective political power can fluctuate, sometimes severely. In this light, the prevalent juridical reading of Hobbes’s political philosophy is inadequate. (shrink)

Beginning in the 1990s, the medieval historiography has devoted increasing attention to the presence of thought experiments in the medieval philosophical sources. Following the line drawn by King, Perler, Grellard and Marenbon studies, this paper aims to use the concept of thought experiment as an historiographical category to explore the issues of Peter Damian’s dilemma, in the chapter I of De divina omnipotentia, about the capacity of the divine power to restore the virginity of a maiden who has lost it. (...) In this perspective, the case of the virgin appears as a counterfactual scenario, that makes us understand how the question is not metaphysical but fundamentally epistemological. Peter Damian is not discussing about possible boundaries of God’s nature: he is rather arguing about the inability of the dialectic arguments to explain the omnipotence, in an attempt to define the cognitive and linguistic modes under which the human intellect could comprehend the virgin’s dilemma. The crucial step is the shift from possibilitas – intended as a statistical approach to the possible as “potential” – to potentia as a metaphysical attribute, regardless of her actualization: in this way, Peter Damian lifts the question up from the level of the human will, which often fails to grasp his objects, to the divine form of the will, which unfailingly achieves his objectives. (shrink)

En lugar de explicar la potencia por el acto (la esencia por la existencia), nos sentimos inclinados a explicar el acto por la potencia. Habría que hacer filosofía basándonos en lo que vemos, no en lo que suponemos. -/- Pero no sólo la mente humana es causa de este reduccionismo. El ente mismo podría ser responsable, porque si bien el ente es concebible sin la existencia actual, el ser no lo es sino unido a un ente. De ahí la fatal (...) tendencia a establecer el ente, separado de la existencia actual, como primer principio de la metafísica. -/- Por último, está la neutralidad existencial de nuestros conceptos, descrita admirablemente por Kant. Si la existencia actual no puede ser representada por, ni en, un concepto, la tentación de olvidarse de ella es irresistible, y se concluirá que la especulación filosófica es existencialmente neutra. -/- Así las cosas, parecería lógico que los filósofos se hayan concentrado en el ente, dando por supuesto el ser. Pero el riesgo es enorme, porque pudiera ser que el ser fuera una fuerza viva y una causa eficiente de efectos observables en las cosas que decimos que son. En este caso, las filosofías basadas en la noción de ser inexistencial estarían abocadas al desastre, y sus defensores podrían concluir -erróneamente- que no vale la pena ponerlo como primer principio del conocimiento metafísico, reemplazando la noción de ser por una de sus partes o aspectos -a modo de sucedáneo- . La metafísica se convierte así en otra ciencia: Lógica con Ockam, Matemáticas con Descartes, Física con Kant, Sociología con Comte, etc. Pero estos intentos a la postre fracasan. Se culpa entonces a la metafísica de ser una pseudociencia y sobreviene el escepticismo metafísico. -/- En este libro se hace un recorrido histórico para mostrar esta tesis: que cualquier intento por romper la unidad del ente, separando la esencia de la existencia, para luego olvidarse de esta última, está condenado al fracaso: acabará desligándose de la realidad, que no se deja atrapar en el puro esencialismo, ni en la fenomenología existencialista. (shrink)