Eric T. Olson

E. J. Lowe and others argue that there can be 'uncountable' things admitting of no numerical description. This implies that there can be something without there being at least one such thing, and that things can be identical without being one or nonidentical without being two. The clearest putative example of uncountable things is portions of homogeneous stuff or 'gunk'. The paper argues that there is a number of portions of gunk if there is any gunk at all, and that the possibility of uncountable things is inadequately supported.

Are we made entirely of matter, like sticks and stones? Or do we have a soul—a nonphysical entity—where our mental lives take place? The authors Eric T. Olson and Aaron Segal begin this accessible and wide-ranging debate by looking at the often-overlooked question of whether we appear in ordinary experience to be material things. Olson then argues that the dependence of our mental lives on the condition of our brains—the fact that general anesthesia causes complete unconsciousness, for instance—is best explained by saying that our mental lives are physical activities in our brains rather than nonphysical activities in the soul. Segal objects that this view is incompatible with two obvious and important facts about ourselves: that there is only one of you rather than trillions of almost identical beings now thinking your thoughts, and that we exist and remain conscious for more than an instant. These facts, he claims, are presupposed in our practical and moral judgments—but they require us to be immaterial things. Olson is forced to concede that there is no easy and uncontroversial answer to these objections but doubts whether taking us to be immaterial would be any help. The debate takes in large philosophical questions extending well beyond dualism and materialism. The book features clear statements of each argument, responses to counter-arguments, in-text definitions, a glossary of key terms, and section summaries. Scholars and students alike will find it easy to follow the debate and learn the key concepts from metaphysics, philosophy of mind, and other areas necessary to understand each position.

Was sind wir? Wie immer man sich zu dieser Frage stellt, eines scheint offenkundig: Wir sind Tiere, genauer gesagt: menschliche Tiere, Mitglieder der Art Homo sapiens. Dabei mag es überraschen, daß viele Philosophen diese vermeintlich banale Tatsache abstreiten. Plato, Augustinus, Descartes, Locke, Berkeley, Hume, Kant und Hegel, um nur einige herausragende zu nennen, waren alle der Meinung, wir seien keine Tiere. Es mag zwar sein, daß unsere Körper Tiere sind. Doch sind wir nicht mit unseren Körpern gleichzusetzen. Wir sind etwas anderes als Tiere. Kaum anderer Meinung sind Denker nicht-westlicher Traditionen. Und rund neun von zehn Philosophen, die heutzutage über Probleme der personalen Identität nachdenken, vertreten Ansichten, die ausschließen, daß wir Tiere sind.

This book consists of fifteen new essays and an introduction by Zimmerman. Most of the authors are Christian philosophers in the ‘analytic’ tradition, and the book is of particular interest to readers of that sort; but there is nothing here that will interest only Christians. As the title suggests, all the essays have at least something to do with persons as such, and most deal with metaphysical issues. Beyond that they are pretty disparate. Seven papers are on substance dualism or idealism, which get a more sympathetic hearing than current fashion would dictate. Lynn Rudder Baker, Hud Hudson, and Peter van Inwagen discuss materialist accounts of human people that they have developed elsewhere. There are papers on specifically Christian doctrines--immortality, divine incarnation, the trinity, and original sin--and one on the value of human people by Philip Quinn. For better or worse, there is almost no discussion of the existence of God. Even so, no one can accuse the authors of avoiding the big questions and retreating to narrow, technical issues. There is as much at stake in these essays as there is in any work of Plato or Kant.

If I am a material thing, there would seem to be such an entity as the matter now making me up. In that case the matter and I must be either one thing or two. This creates an awkward dilemma. If we’re one thing, then I have existed for billions of years and I am human only momentarily. But if we’re two, then my matter would seem to be a second person. Dean Zimmerman and others take the repugnance of these alternatives to show that I’m not a material thing, but rather an immaterial one. This paper explores a way of avoiding the dilemma without giving up materialism: there is no such entity as the matter making me up, but only a lot of particles.

Personal identity deals with philosophical questions that arise about ourselves by virtue of our being people (or, as lawyers and philosophers like to say, persons). This chapter first surveys the main questions of personal identity, and then focuses on the one that has received most attention in recent times, namely our persistence through time. There is no single problem of personal identity, but rather a wide range of questions that are at best loosely connected. The familiar ones include: who am I, what is it to be a person, and what does it take for a person to persist from one time to another. There are three main sorts of answers to the persistence question in the literature: the most popular psychological‐continuity views, according to which the holding of some psychological relation is necessary or sufficient (or both) for one to persist; brute‐physical views; and anticriterialism.

We are material things of a specific sort: animals of the primate species Homo sapiens. This is the view known as animalism. The most common reason for rejecting animalism is that it is has unattractive consequences about what it takes for philosophers to persist through time. If human animals are animals essentially, then our being animals implies that we are animals essentially. If they are animals accidentally, then animalism implies that we are animals only accidentally. Aristotelians say that an animal is a compound of matter and form. Animalists accept the indisputable fact that we have important features not shared by any nonhuman organisms that we know of: the capacity for sophisticated rational thought, for instance, and to speak a language with a complex grammatical structure. Since animals are bodies, it follows that people are not animals. Animals, even human animals, cannot have life after death.

Constitutionalism says that qualitatively different objects can be made of the same matter at once. Critics claim that we should expect such objects to be qualitatively indistinguishable. E.J. Lowe thinks this complaint is based on the false assumption that differences in the way things are at a time must always be grounded in how things are at that time, and that we can answer it by pointing out that different kinds of coinciding objects are subject to different composition principles. I argue that he is mistaken on both counts.