Zed Adams
He is Assistant Professor of Philosophy at the New School for Social Research, New York.

Luiz Alves Eva
He is Assistant Professor of Philosophy at the Universidade Federal do Paraná (Brazil). His area of research is modern skepticism, especially Montaigne, Bacon, and Descartes. He has published Montaigne contra a vaidade (Editora Humanitas, 2004) and A Figura do Filósofo – Ceticismo e Subjetividade em Montaigne (Edições Loyola, 2007).

Paolo Badalotti
His field of research is ancient philosophy of the First Century BC, mainly Cicero’s reception of the Platonic and Aristotelian philosophy. He is currently working on Cicero’s reception of the Timaeus.

James Beebe
He is Assistant Professor of Philosophy at the State University of New York at Buffalo. His publications include “The Abductivist Reply to Skepticism”, Philosophy and Phenomenological Research (forthcoming), and “Constraints on Skeptical Hypotheses” The Philosophical Quarterly (forthcoming).

Thomas Bénatouïl
He is Maître de Conférences at the University of Nancy and a Junior Member of the Institut Universitaire de France. His area of research is ancient philosophy, with a focus on stoicism and skepticism. On the latter, he published a reader on the history of skepticism from Pyrrho to Stanley Cavell (Le Scepticisme, GF-Flammarion, 1997) and a paper about “Le débat entre stoïcisme et platonisme à propos de la vie scolastique: Chrysippe, l’Ancienne Académie, Antiochus”, in M. Bonazzi and C. Helmig (eds.), Stoic Platonism and Platonic Stoicism (Leuven: Leuven University Press, 2007). He has two ongoing research projects, one concerning ancient debates about scholé and contemplation, and the other about the notion of philosophy as a system, both of which involve the study of important aspects of ancient skepticism.

Manuel Bermúdez Vázquez
He is Professor of Philosophy at the University of Córdoba (Spain). He has written several articles on scepticism and two books: La recuperación del escepticismo en el Renacimiento como propedéutica de la filosofía de Francisco Sánchez (Madrid: Fundación Universitaria Española, 2006), and Michel de Montaigne: la culminación del escepticismo en el Renacimiento (Córdoba: Servicio de Publicaciones de la UCO, 2007). He has been visiting scholar at the universities of Milan, Massachussets and Buenos Aires, and visiting professor at the University of Concepción (Chile).

Constance Blackwell
She is a founding member of the International Society for Intellectual History. She has published “Aristotle’s Perplexity becomes Descartes’s Doubt: Metaphysics 3, 1 and Methodical Doubt in Benito Pereira and René Descartes”, in J. R. Maia Neto, G. Paganini, J. C. Laursen (eds.), Skepticism in the Modern Age (Brill, 2009).

Mauro Bonazzi
He is Associate Professor of Philosophy at the Università degli Studi di Milano. His publications related to skepticism include “Scetticismo e probabilismo nel pensiero greco”, Problemata 2 (2002); Academici e Platonici. Il dibattito antico sullo scetticismo di Platone (Led 2003); and “I pirroniani, l’Academia e l’interpretazione scettica di Platone”, in M. Bonazzi and F. Trabattoni (eds.), Platone e la tradizione platonica. Studi di filosofia antica (Cisalpino La Goliardica, 2003).

Baptiste Bondu-Maugein
He is Allocataire Moniteur at the Université Paris X – Nanterre. His areas of research are ancient philosophy and epistemological skepticism. He is currently working on his PhD dissertation “Sextus Empiricus et l’apparent (to phainomenon): la question du fondement pratique du scepticisme antique”.

Andrei Buckareff
He is Assistant Professor of Philosophy at Marist College. His research interests include epistemology, metaphysics, philosophy of mind, and philosophy of religion. His publications include “Acceptance Does Not Entail Belief”, International Journal of Philosophical Studies (forthcoming); “Strategic Reliabilism and the Replacement Thesis in Epistemology”, Dialogue: Canadian Philosophical Review 47 (2008); and “Acceptance and Deciding to Believe”, Journal of Philosophical Research 29 (2004).

Otávio Bueno
He is Professor of Philosophy at the University of Miami. He is particularly interested in Pyrrhonism and contemporary forms of skepticism as well as contemporary responses to skepticism. Some of his publications related to skepticism are “Relativism and Skepticism”, International Journal of Philosophical Studies 16 (2008), and “Davidson and Skepticism: How Not to Respond to the Skeptic”, Principia 9 (2005).

Luca Castagnoli
He is Lecturer in Ancient Philosophy at Durham University. His research interests include ancient epistemology and scepticism. He has published “Self-bracketing Pyrrhonism”, Oxford Studies in Ancient Philosophy 18 (2000), and his book The Logic of Ancient Self-Refutation: From Democritus to Augustine is forthcoming at Cambridge University Press.

Sébastien Charles
He is Associate Professor at the Université de Sherbrooke (Canada), where he is the director of the LABMO (Laboratoire de recherche sur la pensée moderne). Professor Charles is the author of Berkeley au siècle des Lumières. Immatérialisme et scepticisme au XVIIIe siècle (Vrin, 2003), and the editor of Scepticisme et modernité (PUSÉ, 2005) and of a special issue of the journal Philosophiques (35/1, 2008 ) devoted to skepticism in early modern philosophy.

Armando Cíntora
He is Professor of Philosophy of Science at the Universidad Autónoma Metropolitana in Mexico City. He is interested in the meta-methodology of science, that is, on the justification, if any, of scientific method and on weather Pyrrhonian Skepticism is compatible with contemporary science and technology. He has published: “Skepticism and Naturalism”, Sorites (2002) (; “On the possible evolutionary justification of our epistemic capacities”, Ludus Vitalis ), vol. IX, #16 (2002); Los Presupuestos Irracionales de la Racionalidad” (Anthropos, 2005).

Lorenzo Corti
He is a Swiss National Foundation researcher. He is currently a visiting scholar at the Faculty of Classics, University of Cambridge (UK), where he is developing a project entitled “Scepticism and Metaphysics in Greek Antiquity”. He is the author of the article “Scale Pirroniane: ouden mallon in Sesto Empirico”, Dianoia (VII, 2002), and an editor, with O. Bruun, of the book Les Catégories et leur histoire (Paris, Vrin, 2005). His book Scepticisme et langage, an analysis of the usage of language a radical sceptic can make, is forthcoming from Vrin (Paris).

Mark Crouser
He holds a BA in Human Ecology from the College of the Atlantic in Bar Harbor, Maine and a MA in Liberal Studies from St. John’s college in Annapolis, Maryland where he currently resides. He is a legal professional and consultant. Mark’s primary research interests are in Greek and Roman legal theory and Hellenistic philosophical skepticism.

Peter S. Fosl
He is Professor of Philosophy at Transylvania University in Lexington, Kentucky. Co-author with Julian Baggini of The Philosopher’s Tookit (2003) and Ethics Toolkit (2007), Fosl has been a contributing editor to The Philosophers’ Magazine and co-editor of the Dictionary of Literary Biography volumes on British philosophers (2002). Fosl’s research and publications addressing skepticism include, “The Bibliographic Bases of Hume’s Understanding of Pyrrhonism” in the Journal of the History of Philosophy 16.2 (1998) and “Doubt and Divinity: Cicero’s Influence on Hume’s Religious Skepticism” in Hume Studies 20 (1994). Fosl’s more recent work – such as “Cracks in the Cement of the Universe” in Imagining the Sciences (2004) and “Skepticism and Naturalism in Hume” forthcoming in Skepticism – has explored the relationship between skepticism and naturalism.

Bryan Frances
He is Associate Professor of Philosophy at Fordham University. His publications related to skepticism include Scepticism Comes Alive (OUP, 2005), and “Live Skeptical Hypotheses”, in J. Greco (ed.), The Oxford Handbook of Skepticism (OUP, 2008).

Danny Frederick
He is an independent researcher. He has philosophy degrees from the London School of Economics and Birkbeck College London and has taught philosophy at King’s College London. His primary research interests are in rationality, reasoning, philosophical logic, epistemology, human action, freedom, free will, ethics and markets. He is a Popperian skeptic.

Richard Fumerton
He is F. Wendell Miller Professor at the University of Iowa. He is the author of Metaepistemology and Skepticism (Rowman and Littlefield, 1995); “Inferential Internalism and the Presuppositions of Skeptical Argument”, in R. Schantz (ed.), The Externalist Challenge (De Gruyter: 2004); “The Challenge of Refuting Skepticism”, in M. Steup and E. Sosa (eds.), Contemporary Debates in Epistemology (Blackwell, 2005); “Epistemic Internalism, Philosophical Assurance, and the Skeptical Predicament”, in T. Crisp, M. Davidson, and D. Vander Laan (eds.), Knowledge and Reality: Essays in Honor of Alvin Plantinga (Kluwer, 2006); and “The Problem of the Criterion”, in J. Greco (ed.), The Oxford Handbook of Skepticism (OUP, 2008).

Sylvia Giocanti
She is Maître de Conférences at the l’Université de Toulouse-II Le Mirail. Some of her publications related to skepticism are Penser l’irrésolution: Montaigne, Pascal, La Mothe Le Vayer. Trois itinéraires sceptiques (Honoré Champion, 2001), and “Descartes s’est-il débarassé du scepticisme?”, Cahiers philosophiques 106 (2006).

Peter Graham
He is Associate Professor of Philosophy at the University of California, Riverside. His area of researsh is epistemology, especially testimony, justification theory, and skepticism. His publications include “The Theoretical Diagnosis of Skepticism”, Synthese 158 (2007); and “The Relativist Response to Skepticism”, in J. Greco (ed.), The Oxford Handbook on Skepticism (OUP, 2008).

John Greco
He is Leonard and Elizabeth Eslick Chair in Philosophy at Saint Louis University. Professor Greco is the author of Putting Skeptics in Their Place (CUP, 2000) and the editor of The Oxford Handbook of Skepticism (OUP, 2008).

Christophe Grellard
He is Associate Professor of Medieval Philosophy at the University of Paris 1 Panthéon-Sorbonne. His field of research is the medieval reception and transformation of ancient skepticism. Some of his publications related to skepticism are: “Comment peut-on se fier à l’expérience? Esquisse d’une typologie des réponses médiévales au scepticisme”, Quaestio 4 (2004), and “Scepticism, Demonstration and the Infinite Regress Argument (Nicholas of Autrecourt and John Buridan)”, Vivarium 42/2-3 (2007).

Filip Grgic
He is a Research Fellow at the Institute of Philosophy in Zagreb. His publications related to skepticism include “Sextus Empiricus on the Goal of Skepticism”, Ancient Philosophy 26 (2006), and “Sextus Empiricus on the Possibility of Inquiry”, Pacific Philosophical Quarterly 89 (2008).

Jean-Pierre Grima Morales
He is Allocataire Moniteur Normalien at the Université de Franche-Comté. His areas of research are early modern philosophy and skepticism in the Enlightenment. He is currently working on his PhD dissertation “Le scepticisme des Lumières: reconfigurations de l’idée de causalité.”

Graham Henning
He is an Assistant Professor of management at Adelphi University, US. His research focuses on the ontological nature of business, tourism and culture and how skepticism relates to and affects our understanding of these fields.

Ryan Hebert
He is a graduate student at Washington State University. His research interests include skepticism (especially ancient), epistemology, David Hume, political philosophy, and economics.

Michael Hickson
He is an Assistant Professor of Philosophy at Trent University (Canada). His field of research is the history of early modern philosophy, with particular emphases on the works of Descartes and Bayle. His recent publications include: “Theodicy and Toleration in Bayle’s Dictionary,” Journal of the History of Philosophy 51 (2013); “Reductio ad malum: Bayle’s Early Skepticism about Theodicy,” Modern Schoolman 88 (2011); “The Moral Certainty of Immortality in Descartes,” History of Philosophy Quarterly 28 (2011); and “The Message of Bayle’s Last Title: Providence and Toleration in the Entretiens de Maxime et de Themiste,” Journal of the History of Ideas 71 (2010).

Mikael Janvid
He is a lecturer in theoretical philosophy at Stockholm University. Two of his research interests are skepticism and defeasibility. His publications related to skepticism include “Contextualism and the Structure of Skeptical Arguments”, Dialectica 60 (2006), and “Defeaters and Rising Standards of Justification”, Acta Analytica 23 (2008).

Plínio Junqueira Smith
He is Professor of Philosophy at the Universidade São Judas Tadeu (Brazil). His publications include O Ceticismo de Hume (Loyola, 1995), Do começo da filosofia e outros ensaios (Discurso Editorial, 2005), and “Bayle e o ceticismo antigo”, Kriterion 48 (2007).

Markus Lammenranta
He is Senior Lecturer and Docent in Theoretical Philosophy at the University of Helsinki. He is interested in epistemic justification and particularly in Pyrrhonian skepticism. His publications include “Reliabilism and Circularity,” Philosophy and Phenomenological Research 61 (1996); “Reliabilism, Circularity, and the Pyrrhonian Problematic,” Journal of Philosophical Research 28 (2003); “Is Descartes’s Reasoning Viciously Circular?” British Journal for the History of Philosophy 14 (2006); “The Pyrrhonian Problematic,” in J. Greco (ed.), The Oxford Handbook of Skepticism (Oxford, 2008).

John Christian Laursen
He is Professor of Political Science at the University of California, Riverside. He is the author of The Politics of Skepticism in the Ancients, Montaigne, Hume, and Kant (Brill, 1992); “El escepticismo y el pensamiento político”, Revista Latinoamericana de Filosofía 19 (1993); “Yes, Skeptics Can Live Their Skepticism and Cope with Tyranny as Well as Anyone”, in J. Maia Neto and R. Popkin (eds.), Skepticism in Renaissance and Post-Renaissance Thought (Humanity Books / Books Series of the Journal of the History of Philosophy, 2004); and “Scepticisme et cynisme dans l’oeuvre de Pierre de Valence”, Philosophiques 35 (2008).

Pierre Le Morvan
He is Associate Professor of philosophy at The College of New Jersey (TCNJ). His research interests include skepticism, the nature of sensory experience, the nature of knowledge and justification, and the philosophy of religion. He has published articles in Philosophy of Science, The American Philosophical Quarterly, Metaphilosophy, Synthese, Erkenntnis, The Journal of Medical Ethics, The Journal of Philosophical Research, The Heythrop Journal, and The British Journal for the History of Philosophy. He is currently working on papers concerning skepticism and practical wisdom, and a book on the nature of sensory experience.

Carlos Lévy
He is Professor of Latin at the Université de Paris IV-Sorbonne. His areas of research are Academic skepticism (especially Cicero) and modern skepticism. He has published Cicero Academicus. Recherches sur les Académiques et sur la philosophie cicéronienne (Collection de l’Ecole Française de Rome, 1992) and Les scepticismes (PUF, 2008).

Steven Luper
He is Professor and Chair at the Department of Philosophy, Trinity University. He has written extensively about skepticism. As a grad student, he worked with Robert Nozick, and in his first published essay, “The Epistemic Predicament: Knowledge, Nozickian Tracking, and Skepticism,” Australasian Journal of Philosophy 62 (1984), he introduced what is now called (by Sosa) the ‘safety condition for knowledge’. In that same paper he defended the view (which Sosa also later defended) that we do know the falsity of skeptical hypotheses (as Moore held). He also edited two books that concern skepticism: The Skeptics: Contemporary Essays (Ashgate, 2003) and The Possibility of Knowledge: Nozick and his Critics (Rowman & Littlefield, 1987).

Diego Machuca
He is Associate Researcher in Philosophy at the Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina). His research focuses on skepticism in ancient philosophy, epistemology, and metaethics. He is the author of several journal articles and book chapters in these areas, and the editor of New Essays on Ancient Pyrrhonism (Brill, 2011), Pyrrhonism in Ancient, Modern, and Contemporary Philosophy (Springer, 2011), and Disagreement and Skepticism (Routledge, 2013). He is currently co-editing Skepticism: From Antiquity to the Present (Bloomsbury) and Pour et contre: études sur le scepticisme antique (Classiques Garnier), and editing Moral Skepticism: New Essays (Routledge).

Stephen Maitzen
He is the W. G. Clark Professor of Philosophy at Acadia University (Nova Scotia, Canada).  His research interests include skepticism, skeptical theism, the problem of evil, the problem of divine hiddenness, the impact of God on human morality, and decision theory.  His recent work on skepticism includes “The Impossibility of Local Skepticism”, Philosophia 34 (2006); “Skeptical Theism and God’s Commands”, Sophia 46 (2007); “Skeptical Theism and Moral Obligation”, International Journal for Philosophy of Religion 65 (2009); and “A Dilemma for Skeptics”, Teorema 29:1 (2010).

Stéphane Marchand
He is Assistant Professor of Digital Humanities at the École Normale Supérieure de Lyon. His field of research is the history of ancient skepticism, on which he wrote his PhD dissertation: “Identité philosophique et évolution historique du pyrrhonisme ancien” (2008). His publications include “Y a-t-il une écriture sceptique?” in C. Denat (ed.), Au-delà des textes: la question de l’écriture philosophique (Presses Universitaires de Reims, 2007);  “Le sceptique cherche-t-il vraiment la vérité?” Revue de Métaphysique et de Morale 65 (2010); and “Sextus Empiricus’ Style of Writing,” in D.E. Machuca (ed.), New Essays on Ancient Pyrrhonism (Brill, 2011).

Simone Marini
He is a graduate student in Philosophy at UC Dublin and a member of Aporo, the Irish Philosophical Network. His dissertation falls within the broad area of the philosophy of perception; more specifically, he is interested in epistemological and empirical issues related to the justification of perceptual beliefs. His primary areas of research are philosophy of perception and epistemology (with a focus on contemporary responses to radical skepticism).

Berislav Marusic
He is Assistant Professor of Philosophy at Brandeis University. His article “Skepticism Between Excessiveness and Idleness” appeared in the European Journal of Philosophy (2010). He is also the author of “The Desires of Others,” Pacific Philosophical Quarterly (2010); “The Self-Knowledge Gambit,” Synthese (2011); and “The Ethics of Belief,” Philosophy Compass (2011).

Hans Mathlein
He is a Lecturer in Practical Philosophy at Stockholm University, mainly interested in Pyrrhonism and problems of free will.

Denis McManus
He is Reader in Philosophy at the University of Southampton and has a long-standing interest in skepticism, especially in relation to the work of Wittgenstein and Heidegger. He has edited Wittgenstein and Scepticism (Routledge, 2004). He is the author of “Solipsism and Scepticism in the Tractatus” (in Wittgenstein and Scepticism) and of “Heidegger on Scepticism, Truth and Falsehood”, to appear in the Cambridge Companion to Being and Time, edited by Mark Wrathall.

Guido Melchior
He is Lecturer in Philosophy at the University of Graz (Austria). His areas of specialization are epistemology in general and skepticism in particular. His publications include “Skepticism: Lehrer versus Moore,” forthcoming in a special issue of Philosophical Studies on the philosophy of Keith Lehrer. Further papers on skepticism are currently under review.

Moti Mizhari
He teaches philosophy at St. John’s University. His areas of research interest include argumentation theory, epistemology, metaphilosophy, and philosophy of science. Some of his recent publications include “Idealizations and Scientific Understanding” (Philosophical Studies), “The Pessimistic Induction: A Bad Argument Gone Too Far” (Synthese), “Does Conceivability Entail Metaphysical Possibility?” (Ratio), “Three Arguments Against the Expertise Defense” (Metaphilosophy), and “An Argument for External World Skepticism from the Appearance/Reality Distinction” (International Journal for the Study of Skepticism).

Josef Moural
He is Assistant Professor of Philosophy at the Purkynje University (UJEP) in Usti nad Labem (Czech Republic) and a Research Fellow at the Center for Theoretical Study, Charles University, Prague. He has translated David Hume’s First Enquiry into Czech, and published several papers connected with the history of scepticism – two on Descartes’ hyperbolic doubt and five on the sceptical dimension of Plato’s Socrates. He wrote his PhD. dissertation on Hume’s metaphilosophy and he is currently working on ancient Pyrrhonism. He has been Visiting Lecturer at King’s College (London) and Visiting Associate Professor at UC Berkeley in 2007-9.

Emmanuel Naya
He is Associate Professor at the University Lumière Lyon 2 and a Junior Member of the Institut Universitaire de France. He is interested in the skeptical tradition of the early modern period, with a special focus on Renaissance. He has published, besides several papers about the Pyrrhonian impact on Montaigne, Rabelais, Pico, Estienne, Omer Talon, Sánchez or Bayle, a Vocabulaire des sceptiques (Paris, Ellipses, 2002) and an introduction to Montaigne’s Essais dealing with the poetic influences of skepticism (Essais de Michel Seigneur de Montaigne, Paris, Ellipses, 2006). More recently, a new edition of Montaigne’s Essais (Paris, Gallimard, 2009, coll. Folio) and a general study on Renaissance Pyrrhonism (Le Phénomène pyrrhonien. Lire le scepticisme au XVIe siècle, Paris, Classiques Garnier, forthcoming in 2010).

Suzanne Obdrzalek
She is Assistant Professor in Philosophy and Religious Studies at Claremont McKenna College. She is the author of “Living in Doubt: Carneades’ Pithanon Reconsidered”, Oxford Studies in Ancient Philosophy 31 (2006).

Rasmus Outzen
He is a BA student in mathematics at the University of Copenhagen. He has a personal interest in epistemology and Pyrrhonian skepticism, and plans to work in the near future on a science studies project on Pyrrhonism, consciousness, and post-scarcity. He works freelance for Technocracy Incorporated at website

Gianni Paganini
He is Full Professor of the History of Philosophy at the Università del Piemonte Orientale. His area of research is the history of modern skepticism. He is the author of Skepsis. Le débat des modernes sur le scepticisme. Montaigne–Le Vayer–Campanella–Hobbes–Descartes–Bayle (Vrin, 2008), and the editor of The Return of Scepticism. From Hobbes and Descartes to Bayle (Kluwer, 2003). In addition, he edited, with J. R. Maia Neto and Chris Laursen, Skepticism in the Modern Age. Building on the Work of Richard Popkin (Brill, 2009); and, with Maia Neto, Renaissance Scepticisms (Springer, 2008).

Ignacio Pajón Leyra
He is Associate Professor of Ancient Philosophy at the Universidad Complutense de Madrid (Spain). His area of research is ancient skepticism and hellenistic philosophy, in particular Sextus Empiricus. His publications related to skepticism include Fenomenología de la incertidumbre (Editorial Fundamentos, 2002), Categorías y supuestos del escepticismo pirrónico (Servicio de publicaciones UCM, 2012), and Claves para entender el escepticismo antiguo (Ediciones Antígona, forthcoming). He is also an active member of the Centre d’études sur la pensée antique “Kairòs kai Lógos” (Université de Provence Aix-Marseille I), and of the Sociedad Ibérica de Filosofía Griega (SIFG).

Duncan Pritchard
He occupies the Chair in Epistemology at the University of Edinburgh. He has worked extensively in epistemology, and on the problem of skepticism in particular. His publications include Epistemic Luck (Oxford UP, 2005) and What Is This Thing Called Knowledge? (Routledge, 2006).

Christopher Ranalli
He is a Master of Research student in Philosophy at the University of Edinburgh. His research interests include radical skepticism of the Cartesian and Pyrrhonian variety. His thesis will focus on metaepistemological skepticism.

Baron Reed
He is Associate Professor of Philosophy at Northwestern University.  His publications include: “A New Argument for Skepticism,” Philosophical Studies (2009); “The Long Road to Skepticism”, The Journal of Philosophy (2007); “Epistemic Circularity Squared? Skepticism about Common Sense”, Philosophy and Phenomenological Research (2006); and “The Stoics’ Account of the Cognitive Impression,” Oxford Studies in Ancient Philosophy (2002).

Brian Ribeiro
He is Assistant Professor in Philosophy & Religion at the University of Tennessee at Chattanooga. His areas of research are ancient, modern (especially Montaigne and Hume), and contemporary skepticism. His publications include “Epistemological Skepticism(s) and Rational Self-Control,” The Monist 85 (2002); “Is Pyrrhonism Psychologically Possible?”, Ancient Philosophy 22 (2002); “Cartesian Skepticism and the Epistemic Priority Thesis,” The Southern Journal of Philosophy 40 (2002); “Skeptical Parasitism and the Continuity Argument,” Metaphilosophy 35 (2004); “Must the Radical Skeptic Be Intellectually Akratic?”, Facta Philosophica 8 (2006); “Hume’s Standard of Taste and the de gustibus Sceptic,” British Journal of Aesthetics 47 (2007).

Ramón Román Alcalá
He is Professor of Philosophy at the Universidad de Córdoba (Spain). His publications related to skepticism include El escepticismo antiguo: posibilidad del conocimiento y búsqueda de la felicidad (Servicio de Publicaciones de la Universidad de Córdoba, 1994); “La nueva Academia: dogmatismo o skepsis”, Pensamiento 51 (1995); “Enesidemo: la recuperación de la tradición escéptica griega”, Anales del Seminario de Historia de la Filosofía 1996; and “The Skepticism of the New Academy: a Weak Form of Platonism?”, Philosophical Inquiry 25 (2003).

Paul Russell
He is Professor in Philosophy at the University of British Columbia, where he has been teaching since 1987. He has held a number of research and teaching positions, including Cambridge University (1984-87); the University of Virginia (1988); Stanford University (1989-90); and the University of Pittsburgh (1996-97). In 2005 he was Kenan Distinguished Visiting Professor at the University of North Carolina at Chapel Hill. His published work includes Freedom and Moral Sentiment: Hume’s Way of Naturalizing Responsibility (Oxford University Press, 1995) and The Riddle of Hume’s Treatise: Skepticism, Naturalism, and Irreligion (Oxford University Press: 2008). For the Fall term of 2010 (September – November) Paul Russell will be Fowler Hamilton Visiting Fellow at Christ Church, Oxford and during the Winter term of 2011 (January-March) he will be a Visiting Fellow at the University of St Andrews, Centre for Ethics, Philosophy and Public Affairs.

Claudio Salvatore
He obtained his BA in Moral Philosophy in 2006 (Bari, 110/110 cum laude), his MA in Philosophy and Human Sciences in 2008 (Bari, 110/110 cum laude), and his MA in Philosophy in 2009 (London). He is currently a first-year PhD student at the University of Edinburgh, working on a dissertation about Wittgenstein’s response to Radical Skepticism under the supervision of Professor Duncan Pritchard.

Fabien Schang
He is Postdoctoral Researcher in Philosophy at the Laboratory of History of Science and Philosophy of Nancy (France). His areas of research are formal philosophy (especially formal semantics and philosophical logics) and logical skepticism. He’s applying a postdoctoral project about logical values, including a formal analysis of doubt and its import of a number of such ancient philosophy as Western skepticism (Pyrrhonism, New Academy) and Eastern skepticism (Sanjaya’s Tetralemma). A paper about skepticism is in preparation: “Logic(s) of Doubt(s)”.

Genia Schönbaumsfeld
She is Senior Lecturer of Philosophy at the University of Southampton (UK) and is currently working on McDowell’s anti-skeptical strategy and its relation to Wittgenstein’s On Certainty. Previous publications include A Confusion of the Spheres – Kierkegaard and Wittgenstein on Philosophy and Religion (Oxford University Press, 2007) and Transzendentale Argumentation und Skeptizismus (Peter Lang Press, 2000).

Waldomiro Silva Filho
He is Associate Professor of Philosophy at the Universidade Federal da Bahia (Brazil) and Visiting Scholar at Harvard University (2009-2010). His areas of research are Contemporary Skepticism, Moral Psychology, and Philosphy of Mind. He has published Mente, Linguagem e Mundo (Alameda, 2010), Razones e interpretaciones (Ediciones del Signo, 2008), Ensaios sobre Ceticismo (with Plínio Smith, Alameda, 2006), Linguagem, Interpretação, Verdade: Davidson e a filosofia (with Plínio Smith, Loyola, 2005), O ceticismo e a possibilidade da filosofia (Unijuí, 2005), and Razão Mínima (Sâo Marco, 2004).

Shweta Singh
She is currently a Teaching Assistant in the Philosophy Department of the University of Delhi, India. She is interested in metaethics, skepticism, ethics in politics, modern western philosophers, Buddhism, Nietzsche and Jonathan Dancy. She has published “Nietzsche and the Free Play of Self Destructive Cogitation”, Delhi University Philosophy Journal (March 2008). She is currently working on a paper dealing with skepticism in Wittgenstein’s On Certainty.

Ernest Sosa
He is Board of Governors Professor of Philosophy at Rutgers University. His area of research is contemporary epistemology, including skepticism, objectivity, immediate knowledge, virtue epistemology, naturalized epistemology, epistemic contextualism, a priori knowledge, intuitions and philosophical methodology.

Emidio Spinelli
He is Associate Professor of Ancient Philosophy at the Università di Roma “La Sapienza”. His field of research is Pyrrhonian skepticism. His publications include two translations of some of Sextus Empiricus’ writings, namely: Sesto Empirico. Contro gli etici (Bibliopolis, 1995) and Sesto Empirico. Contro gli astrologi (Bibliopolis, 2000). Some of his papers have been collected in Questioni scettiche. Letture introduttive al pirronismo antico (Lithos, 2005). Together with Mario De Caro, he has edited Scetticismo: una vicenda filosofica (Carocci, 2007).

Svavar Hrafn Svavarsson
He is professor of philosophy at the University of Iceland. He has published articles and chapters on Pyrrhonian skepticism, most recently “Pyrrho and Early Pyrrhonism”, in R. Bett (ed.), Cambridge Companion to Ancient Scepticism (CUP, 2010).

Nassim Taleb
He is Distinguished Professor of Risk Engineering at the New York University Polytechnic Institute. He is the author of The Black Swan: The Impact of the Highly Improbable (Random House, 2007).

Harald Thorsrud
He is Assistant Professor of philosophy at Agnes Scott College in Decatur, Georgia (US). His publications include “Arcesilaus and Carneades,” forthcoming in R. Bett (ed.), The Cambridge Companion to Ancient Scepticism (CUP, 2009); “Radical and Mitigated Skepticism in Cicero’s Academica,” forthcoming in W. Nicgorski (ed.), Cicero’s Practical Philosophy (Notre Dame University Press); Ancient Scepticism (Acumen Publishing and University of California Press, 2009); “Is the Examined Life Worth Living? A Pyrrhonian Alternative,” Apeiron 36.3 (2003); and “Cicero on His Academic Predecessors: the Fallibilism of Arcesilaus and Carneades,” Journal of the History of Philosophy 40.1 (2002).

Paolo Togni
He earned a PhD in philosophy at the University of Macerata (Italy). His field of research is Hellenistic epistemology and philosophy of mind. His pubblications include “Rappresentazione e oggetto nella gnoseologia stoica”, Dianoia 11 (2006); “Esalazioni senzienti. Eraclito nella psicologia della prima Stoa”, in I. Pozzoni (a cura di), Grecità marginale e nascita della cultura occidentale. I presocratici (Liminamentis, 2008). His book about Stoic epistemology is forthcoming at Bibliopolis.

Shaul Tor
He is a graduate student at Cambridge University. He will soon become a Research Fellow in Jesus College, Cambridge. His research concerns primarily pre-Socratic Greek epistemology and religion and has an abiding interest in Greek skepticism. His article “Argument and Signification in Sextus Empiricus: Against the Mathematicians VIII 289-290” is forthcoming in Rhizai.

Ioannis Trisokkas
He has written his PhD thesis on Hegel and Pyrrhonian Scepticism (Warwick, 2009). He held a DAAD Junior Research Fellowship at the University of Tübingen and an Early Career Fellowship at the Warwick Institute of Advanced Study. His research focuses on the historical areas of German Idealism and Ancient Philosophy, and the systematic areas of epistemology, metaphysics, philosophy of language and philosophy of science. Ioannis is particularly interested in clarifying and expanding on responses to Pyrrhonian scepticism offered by philosophers belonging to the continental tradition. His publications include “Presuppositionless Scepticism,” Pli 19 (2008); “Hegel’s Early Response to Pyrrhonian Scepticism,” in P. Hanna (ed.), An Anthology of Philosophical Studies, vol. III (Athens: ATINER, 2009); and “Sextus Empiricus, Outlines of Pyrrhonism,” Critica 2010. His monograph, entitled The Refutation of Scepticism: Hegel’s Resolution of the Pyrrhonian Problematic, is currently under review.

Giuseppe Veltri
He is Professor of Jewish Philosophy and Culture History at University of Halle-Wittenberg. Since 2009, he has published the translation of the philosophical sermons of J. Moscato and dealt with the first reception of Academic and Pyrrhonian philosophy in Judaism. He has published articles on scepticism in the works of J. Löw, J. Moscato, and S. Luzzatto. The conception of Jewish scepticism was the topic of his lectio inauguralis in occasion of the award of honorary Professor at the university of Leipzig.

Máté Veres

Katja Vogt
She is Professor of Philosophy at Columbia University. She has published Skepsis und Lebenspraxis: Das pyrrhonische Leben ohne Meinungen (Alber Verlag, 1998); “Urteilsenthaltung und Handlung in der pyrrhonischen Skepsis,” in A. Reckermann and D. Perler (eds.), Reclams Klassiker der Philosophie (Reclam Verlag, 2004); “Skeptische Suche und das Verstehen von Begriffen,” in C. Rapp and T. Wagner (eds.), Proceedings of Wissen und Bildung in der antiken Philosophie (Metzler, 2006); “Scepticism and Action,” in R. Bett (ed.), The Cambridge Companion to Ancient Scepticism (CUP, forthcoming).

James Warren
He is a Senior Lecturer in Classics at the University of Cambridge and a Fellow and Director of Studies in Philosophy at Corpus Christi College. He is interested in ancient philosophical scepticism and particularly in scepticism in Presocratic and Hellenistic philosophy. His publications include “Aristocles’ refutations of Pyrrhonism (Eus. PE 14.18.1-10)”, Proceedings of the Cambridge Philological Society 46 (2000); “Socratic scepticism in Plutarch’s adversus Colotem”, Elenchos 23 (2002); “Sextus Empiricus and the tripartition of time”, Phronesis 48 (2003).

Paul Michael Whitfield
He is an undergraduate student at San Jose State University.

Andrew David Wong
He is a doctoral candidate in the Department of Philosophy at the University of California, San Diego. His areas of specialization are ancient philosophy and epistemology. He is currently completing a dissertation on the nature and scope of Pyrrhonian Skepticism, as understood in the works of Sextus Empiricus.

Cristóbal Zarzar
Cristóbal Zarzar studies a PhD in Ancient Philosophy in the Faculty of Classics at the University of Cambridge. He is mainly interested in Hellenistic Philosophy and has been working on the Pyrrhonism of Sextus Empiricus. His current research project focuses on the metaphysical underpinnings of the different epistemological answers to the problem of conflicting appearances in antiquity. Besides ancient philosophy, his interests extend to contemporary epistemology, philosophy of mind, and philosophy of religion.

Renata Zieminska
She is Professor of Philosophy (Chair of Epistemology) at the University of Szczecin (Poland). Her publications related to skepticism include: “Descartes’ Meditations in the History of Scepticism”, Studies in Logic, Grammar and Rhetoric 15 (28) 2009; “Michel de Montaigne jako sceptyk renesansowy”, in P. Gutowski & P. Gut (eds.), Z dziejów filozoficznej refleksji nad człowiekiem (Lublin: Wydawnictwo KUL, 2007); “Eksternalizm a sceptycyzm we współczesnej filozofii anglosaskiej”, Diametros 3 (2005); “Inconsistency of Ancient Skepticism” (forthcoming). She is currently working on the problem of the consistency of global skepticism and is preparing a book about the history of skepticism.

Ugo Zilioli
He is an Irish Research Council Philosophy Fellow at TCD, Dublin. He mainly works on ancient relativism (Protagoras and the Challenge of Relativism, Ashgate 2007) and on the Socratic schools. At the moment he is completing a book on the Cyrenaics for Acumen (The Cyrenaics. An Introduction), which will see light in 2011. A larger project on the way is on metaphysical indeterminacy in Greek philosophy (i.e. the view ascribed to Pyrrho—on Bett’s reading—in Aristocles’ On Philosophy).

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