|Alma mater|| University of Miami |
University of Pittsburgh
|Institutions|| Brown University |
|Thesis||Directives: A Logico-Philosophical Inquiry (1964)|
|Doctoral advisor||Nicholas Rescher|
|Doctoral students|| Brie Gertler |
|Metaphysics · Epistemology · Philosophy of mind|
Ernest Sosa (born June 17, 1940) is an American philosopher primarily interested in epistemology.Since 2007 he has been Board of Governors Professor of Philosophy at Rutgers University, but he spent most of his career at Brown University.
Born in Cárdenas, Cuba, on June 17, 1940,Sosa earned his BA and MA from the University of Miami and his PhD from the University of Pittsburgh in 1964. His dissertation was supervised by Nicholas Rescher.
He joined the Rutgers faculty in 2007, having taught at Brown University since 1964. While full-time at Brown, he was also a distinguished visiting professor at Rutgers every spring from 1998 to 2006.Sosa has been described as "one of the most important epistemologists of the last half-century."
Sosa is a past president of the American Philosophical Association and a Fellow of the American Academy of Arts & Sciences.He edits the philosophical journals Noûs and Philosophy and Phenomenological Research . In 2005 he delivered the John Locke Lectures at Oxford, which formed the basis of his 2007 book.
Sosa received the 2010 Nicholas Rescher Prize for contributions to systematic philosophy, conferred by the University of Pittsburgh biennially.His son, David Sosa, is a professor and chair of the philosophy department at the University of Texas, Austin.
In addition to epistemology, Sosa has also written on metaphysics, modern philosophy and philosophy of mind. In his books Knowledge in Perspective (1991) and A Virtue Epistemology (2007), he defends a form of virtue epistemology called "virtue perspectivism", which distinguishes animal knowledge from reflective knowledge.
"Contemporary virtue epistemology, conceived as such and as a distinctive movement within epistemology, began with Ernest Sosa’s work in the early 1980s."Virtue epistemology is characterized by two features: against W.V.O. Quine, it views "epistemology as a normative discipline" and "intellectual agents and communities as the primary focus of epistemic evaluation, with a focus on the intellectual virtues and vices embodied in and expressed by these agents and communities."
Absolutism and Its "explosion"
In "Existential Relativity," Sosa considers theories of composition. He calls ordinary theories of composition absolutism, which has objects as existing absolutely when compositional conditions are fulfilled in the object. Objects exist when certain stuff is arranged in a certain way. Absolutism leads to what Sosa coins an "explosion" of entities in that an indeterminate number overlap at a location and any change destroys and creates an indeterminate number of others.
Sosa provides an illustration to motivate this problem. A snowball is made of a piece of snow in a "round" (spherical) shape and follows certain persistence conditions. Sosa introduces the concept of a "snowdiscall." A snowdiscall is "constituted by a piece of snow as matter and as form any shape between round [spherical] and being disc-shaped."On this definition, a snowball is also a snowdiscall, but a snowdiscall is not necessarily a snowball. So there are two distinct objects that overlap. But just as there is a snowdiscall, there can be an indeterminate number of other objects: objects between round and 50% disc-shaped, objects between round and 30% disc-shaped, etc. These are distinct, existing objects and not just arbitrary descriptions. What seems to be arbitrary in absolutism is the idea that one object (the snowball) has more claim to existence than the others.
Existential relativism: As a potential solution, Sosa advances existential relativism. The central claim is that objects do not exist objectively as if some "[c]onstituted, supervenient entities [. . .] objectively supervene[d] on their requisite constitutive matters and forms."On existential relativism, composition is relative to a conceptual scheme. Conceptual schemes are mental collections of ideas of how the world exists and interacts. They can differ based on language, culture, personal utility, perspective, etc. A person's conceptual scheme helps select the things in the external world that resemble these mental ideas and then confers existence on them. Since conceptual schemes can differ, different persons may recognize different objects. Conceptual schemes are chosen based on how useful they are to the individual in understanding the world.
Sosa's working definition of existential relativism: "that what exists relative to our present scheme O is what it recognizes directly, what it recognizes indirectly through its predecessors or successors, and what it would recognize if we had developed appropriately or were to do so now, and had been or were to be appropriately situated."This definition allows for objects to exist if a conceptual scheme recognizes them, recognizes something that entails another object's existence, or would have recognized them if people had different capacities or spatiotemporal locations.
Sosa's anticipated objections:
Epistemology is the branch of philosophy concerned with the theory of knowledge.
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Virtue epistemology is a contemporary philosophical approach to epistemology that stresses the importance of intellectual, and specifically epistemic virtues. A distinguishing factor of virtue theories is that they use for the evaluation of knowledge the properties of the persons who hold beliefs in addition to or instead of the properties of propositions and beliefs. Some advocates of virtue epistemology claim to more closely follow theories of virtue ethics, while others see only a looser analogy between virtue in ethics and virtue in epistemology.
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John Greco is an American philosopher. He is the Leonard and Elizabeth Eslick Chair in Philosophy at Saint Louis University. Greco received his Ph.D. from Brown University in 1989, where he studied under Ernest Sosa, and his AB from Georgetown University in 1983. His research interests are in epistemology and metaphysics and he has published widely on virtue epistemology, epistemic normativity, skepticism, and Thomas Reid. He is the Editor of American Philosophical Quarterly. For 2013-15, together with Eleonore Stump, he holds a $3.3 million grant from the John Templeton Foundation for a project on intellectual humility.
Michael Krausz is a Swiss-born American philosopher as well as an artist and orchestral conductor. His philosophical works focus on the theory of interpretation, theory of knowledge, philosophy of science, philosophy of history, and philosophy of art and music. Krausz is Milton C. Nahm Professor of Philosophy at Bryn Mawr College, and he teaches Aesthetics at the Curtis Institute of Music. He has taught at University of Toronto and has been visiting professor at American University, Georgetown University, Oxford University, Hebrew University of Jerusalem, American University in Cairo, University of Nairobi, Indian Institute of Advanced Study, and University of Ulm, among others. Krausz is the co-founder and former Chair of the fourteen-institution Greater Philadelphia Philosophy Consortium.
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The Nicholas Rescher Prize for Systematic Philosophy was established by the University of Pittsburgh in 2009 to counter present-day tendencies to narrow specialization by rewarding and showcasing the work of philosophers who have addressed the historical “big questions” of the field in ways that nevertheless command the respect of specialists. Awarded biennially the prize consists of a gold medal together with a sum of $25,000. The prize is named for Nicholas Rescher, Distinguished University Professor of Philosophy, who has served on the university’s faculty for over 50 years. The recipients to date are: Ernest Sosa (2010), Alvin Plantinga and Jürgen Mittelstraß, Hilary Putnam (2015), and Ruth Millikan (2017).
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