Polarization is a topic of intense interest among social scientists, but there is significant disagreement regarding the character of the phenomenon and little understanding of underlying mechanics. A first problem, we argue, is that polarization appears in the literature as not one concept but many. In the first part of the article, we distinguish nine phenomena that may be considered polarization, with suggestions of appropriate measures for each. In the second part of the article, we apply this analysis to evaluate (...) the types of polarization generated by the three major families of computational models proposing specific mechanisms of opinion polarization. (shrink)

Polarization is a topic of intense interest among social scientists, but there is significant disagreement regarding the character of the phenomenon and little understanding of underlying mechanics. A first problem, we argue, is that polarization appears in the literature as not one concept but many. In the first part of the article, we distinguish nine phenomena that may be considered polarization, with suggestions of appropriate measures for each. In the second part of the article, we apply this analysis to evaluate (...) the types of polarization generated by the three major families of computational models proposing specific mechanisms of opinion polarization. (shrink)

ABSTRACT This article distinguishes nine senses of polarization and provides formal measures for each one to refine the methodology used to describe polarization in distributions of attitudes. Each distinct concept is explained through a definition, formal measures, examples, and references. We then apply these measures to GSS data regarding political views, opinions on abortion, and religiosity—topics described as revealing social polarization. Previous breakdowns of polarization include domain-specific assumptions and focus on a subset of the distribution’s features. This has conflated multiple, (...) independent features of attitude distributions. The current work aims to extract the distinct senses of polarization and demonstrate that by becoming clearer on these distinctions we can better focus our efforts on substantive issues in social phenomena. (shrink)

The current project introduces a general theory and supporting models that offer a plausible explanation and viable mechanism for generating and perpetuating prosocial behavior. The proposed mechanism is preferential detachment and the theory proposed is that agents utilizing preferential detachment will sort themselves into social arrangements such that the agents who contribute a benefit to the members of their group also do better for themselves in the long run. Agents can do this with minimal information about their environment, the other (...) agents, the future, and with minimal cognitive/computational ability. The conclusion is that self-organizing into groups that maintain prosocial behaviors may be simpler and more robust than previously thought. The primary contribution of this research is that a single, simple mechanism operating in different contexts generates the conceptually distinct prosocial behaviors achieved by other models, and in a manner that is more amenable to evolutionary explanations. It also bears importantly on explanations of the evolution of our moral experiences and their connection with prosociality. (shrink)

Public discussions of political and social issues are often characterized by deep and persistent polarization. In social psychology, it’s standard to treat belief polarization as the product of epistemic irrationality. In contrast, we argue that the persistent disagreement that grounds political and social polarization can be produced by epistemically rational agents, when those agents have limited cognitive resources. Using an agent-based model of group deliberation, we show that groups of deliberating agents using coherence-based strategies for managing their limited resources tend (...) to polarize into different subgroups. We argue that using that strategy is epistemically rational for limited agents. So even though group polarization looks like it must be the product of human irrationality, polarization can be the result of fully rational deliberation with natural human limitations. (shrink)

Epistemic justifications for democracy have been offered in terms of two different aspects of decision-making: voting and deliberation, or ‘votes’ and ‘talk.’ The Condorcet Jury Theorem is appealed to as a justification in terms votes, and the Hong-Page “Diversity Trumps Ability” result is appealed to as a justification in terms of deliberation. Both of these, however, are most plausibly construed as models of direct democracy, with full and direct participation across the population. In this paper, we explore how these results (...) hold up if we vary the model so as to reflect the more familiar democratic structure of a representative hierarchy. We first recount extant analytic work that shows that representation inevitably weakens the voting results of the Condorcet Jury Theorem, but we question the ability of that result to shine light on real representative systems. We then show that, when we move from votes to talk, as modeled in Hong-Page, representation holds its own and even has a slight edge. (shrink)

We motivate a picture of social epistemology that sees forgetting as subject to epistemic evaluation. Using computer simulations of a simple agent-based model, we show that how agents forget can have as large an impact on group epistemic outcomes as how they share information. But, how we forget, unlike how we form beliefs, isn’t typically taken to be the sort of thing that can be epistemically rational or justified. We consider what we take to be the most promising argument for (...) this claim and find it lacking. We conclude that understanding how agents forget should be as central to social epistemology as understanding how agents form beliefs and share information with others. (shrink)

We motivate a picture of social epistemology that sees forgetting as subject to epistemic evaluation. Using computer simulations of a simple agent-based model, we show that how agents forget can have as large an impact on group epistemic outcomes as how they share information. But, how we forget, unlike how we form beliefs, isn’t typically taken to be the sort of thing that can be epistemically rational or justified. We consider what we take to be the most promising argument for (...) this claim and find it lacking. We conclude that understanding how agents forget should be as central to social epistemology as understanding how agents form beliefs and share information with others. (shrink)

A first take, matured in later work, in modeling belief polarization.

In the original publication of the article, the Acknowledgement section was inadvertently not included. The Acknowledgement is given in this Correction.

Agent-based models have played a prominent role in recent debates about the merits of democracy. In particular, the formal model of Lu Hong and Scott Page and the associated “diversity trumps ability” result has typically been seen to support the epistemic virtues of democracy over epistocracy (i.e., governance by experts). In this paper we first identify the modeling choices embodied in the original formal model and then critique the application of the Hong-Page results to philosophical debates on the relative merits (...) of democracy. In particular we argue that the “best-performing agents” in Hong-Page model should not be interpreted as experts. We next explore a closely related model in which best-performing agents are more plausibly seen as experts and show that the diversity trumps ability result fails to hold. However, with changes in other parameters (such as the deliberation dynamic) the diversity trumps ability result is restored. The sensitivity of this result to parameter choices illustrates the complexity of the link between formal modeling and more general philosophical claims; we use this debate as a platform for a more general discussion of when and how agent-based models can contribute to philosophical discussions. (shrink)

The Hong and Page ‘diversity trumps ability’ result has been used to argue for the more general claim that a diverse set of agents is epistemically superior to a comparable group of experts. Here we extend Hong and Page’s model to landscapes of different degrees of randomness and demonstrate the sensitivity of the ‘diversity trumps ability’ result. This analysis offers a more nuanced picture of how diversity, ability, and expertise may relate. Although models of this sort can indeed be suggestive (...) for diversity policies, we advise against interpreting such results overly broadly. (shrink)

This article aims to describe the last 10 years of the collaborative scientific endeavors on polarization in particular and collective problem-solving in general by our multidisciplinary research team. We describe the team’s disciplinary composition—social psychology, political science, social philosophy/epistemology, and complex systems science— highlighting the shared and unique skill sets of our group members and how each discipline contributes to studying polarization and collective problem-solving. With an eye to the literature on team dynamics, we describe team logistics and processes that (...) we believe make our multidisciplinary team persistent and productive. We emphasize challenges and difficulties caused by disciplinary differences in terms of terminology, units/levels of analysis, methodology, and theoretical assumptions. We then explain how work disambiguating the concepts of polarization and developing an integrative theoretical and methodological framework with complex systems perspectives has helped us overcome these challenges. We summarize the major findings that our research has produced over the past decade, and describe our current research and future directions. Last, we discuss lessons we have learned, including difficulties in a “three models” project and how we addressed them, with suggestions for effective multidisciplinary team research. (shrink)

A scientific community can be modeled as a collection of epistemic agents attempting to answer questions, in part by communicating about their hypotheses and results. We can treat the pathways of scientific communication as a network. When we do, it becomes clear that the interaction between the structure of the network and the nature of the question under investigation affects epistemic desiderata, including accuracy and speed to community consensus. Here we build on previous work, both our own and others’, in (...) order to get a firmer grasp on precisely which features of scientific communities interact with which features of scientific questions in order to influence epistemic outcomes. (shrink)

Epistemic justifications for democracy have been offered in terms of two different aspects of decision-making: voting and deliberation, or 'votes' and 'talk.' The Condorcet Jury Theorem is appealed to as a justification in terms of votes, and the Hong-Page "Diversity Trumps Ability" result is appealed to as a justification in terms of deliberation. Both of these, however, are most plausibly construed as models of direct democracy, with full and direct participation across the population. In this paper, we explore how these (...) results hold up if we vary the model so as to reflect the more familiar democratic structure of a representative hierarchy. We first recount extant analytic work that shows that representation inevitably weakens the voting results of the Condorcet Jury Theorem, but we question the ability of the result to shine light on real representative systems. We then show that, when we move from votes to talk, as modeled in Hong-Page, representation holds its own and even has a slight edge. (shrink)

In a series of formal studies and less formal applications, Hong and Page offer a ‘diversity trumps ability’ result on the basis of a computational experiment accompanied by a mathematical theorem as explanatory background (Hong & Page 2004, 2009; Page 2007, 2011). “[W]e find that a random collection of agents drawn from a large set of limited-ability agents typically outperforms a collection of the very best agents from that same set” (2004, p. 16386). The result has been extremely influential as (...) an epistemic justification for diversity policy initiatives. Here we show that the ‘diversity trumps ability’ result is tied to the particular random landscape used in Hong and Page’s simulation. We argue against interpreting results on that random landscape in terms of ‘ability’ or ‘expertise.’ These concepts are better modeled on smother and more realistic landscapes, but keeping other parameters the same those are landscapes on which it is groups of the best performing that do better. Smoother landscapes seem to vindicate both the concept and the value of expertise. Change in other parameters, however, also vindicates diversity. With an increase in the pool of available heuristics, diverse groups again do better. Group dynamics makes a difference as well; simultaneous ‘tournament’ deliberation in a group in place of the ‘relay’ deliberation in Hong and Page’s original model further emphasizes an advantage for diversity. ‘Tournament’ 2 dynamics particularly shows the advantage of mixed groups that include both experts and non-experts. As a whole, our modeling results suggest that relative to problem characteristics and conceptual resources, the wisdom of crowds and the wisdom of the few each have a place. We regard ours as a step toward attempting to calibrate their relative virtues in different modelled contexts of intellectual exploration. (shrink)

Aaron Zimmerman presents a new pragmatist account of belief, in terms of information poised to guide our more attentive, controlled actions. And he explores the consequences of this account for our understanding of the relation between psychology and philosophy, the mind and brain, the nature of delusion, faith, pretence, racism, and more.

The fact that philosophy is systematic—that philosophical issues are thoroughly interconnected—was a commonplace among nineteenth century idealists, then neglected by analytic philosophers throughout much of the twentieth century, and has now finally started to get some renewed attention. But other than calling attention to the fact, few philosophers have tried to say what it consists in, or what its implications are. -/- I argue that the systematicity of philosophy has disastrous epistemological implications. In particular, it implies philosophical skepticism: philosophers are (...) rationally prohibited from believing any philosophical thesis. The argument goes by way of a new principle that connects inquiry with what is rational to believe. I conclude with a discussion of the relationship between my argument and other, more well-trodden arguments for philosophical skepticism. (shrink)

This paper extends three decades of work arguing that researchers who discuss consciousness should not restrict themselves only to (adult) human minds, but should study (and attempt to model) many kinds of minds, natural and artificial, thereby contributing to our understanding of the space containing all of them. We need to study what they do or can do, how they can do it, and how the natural ones can be emulated in synthetic minds. That requires: (a) understanding sets of requirements (...) that are met by different sorts of minds, i.e. the niches that they occupy, (b) understanding the space of possible designs, and (c) understanding complex and varied relationships between requirements and designs. Attempts to model or explain any particular phenomenon, such as vision, emotion, learning, language use, or consciousness lead to muddle and confusion unless they are placed in that broader context. A methodology for making progress is summarised and a novel requirement proposed for a theory of how human minds work: the theory should support a single generic design for a learning, developing system that, in addition to meeting familiar requirements, should be capable of developing different and opposed philosophical viewpoints about consciousness, and the so-called hard problem. In other words, we need a common explanation for the mental machinations of mysterians, materialists, functionalists, identity theorists, and those who regard all such theories as attempting to answer incoherent questions. No designs proposed so far come close. (shrink)

In their target article, McKay & Dennett (M&D) conclude that only “positive illusions” are adaptive misbeliefs. Relying on overly strict conceptual schisms (deficit vs. motivational, functional vs. organic, perception vs. belief), they prematurely discount delusions asbiologicallyadaptive. In contrast to their view that “motivation” plays a psychological but not a biological function in a two-factor model of the forming and maintenance of delusions, we propose asingleimpairment in prediction-error–driven (i.e., motivational) learning in three stages in which delusions play a biologically adaptive role.

From the bestselling author of Assholes: A Theory, a book that--in the tradition of Shopclass as Soulcraft, Barbarian Days and Zen and the Art of Motorcycle Maintenance--uses the experience and the ethos of surfing to explore key concepts in philosophy. The existentialist philosopher Jean-Paul Sartre once declared "the ideal limit of aquatic sports...is waterskiing." The avid surfer and lavishly credentialed academic philosopher Aaron James vigorously disagrees, and in Surfing with Sartre he intends to expound the thinking surfer's view of (...) the matter, in the process elucidating such philosophical categories as freedom, being, phenomenology, morality, epistemology, and even the emerging values of what he terms "leisure capitalism." In developing his unique surfer-philosophical worldview, he draws from his own experience of surfing and from surf culture and lingo, and includes many relevant details from the lives of the philosophers, from Aristotle to Wittgenstein, with whose thought he engages. In the process, he'll speak to readers in search of personal and social meaning in our current anxious moment, by way of doing real, authentic philosophy. (shrink)

Haskell Curry’s philosophy of mathematics is really a form of “structuralism” rather than “formalism” despite Curry’s own description of it as formalist (Seldin 2011). This paper explains Curry’s actual view by a formal analysis of a simple example. This analysis is extended to solve Keränen’s (2001) identity problem for structuralism, confirming Leitgeb’s (2020a, b) solution, and further clarifies structural ontology. Curry’s methods answer philosophical questions by employing a standard mathematical method, which is a virtue of the “methodological autonomy” emphasized by (...) Curry (1951, 1963) and more recently with greater clarity by Maddy (1997, 2007). (shrink)

Biological science uses multiple species concepts. Order can be brought to this diversity if we recognize two key features. First, any given species concept is likely to have a patchwork structure, generated by repeated application of the concept to new domains. We illustrate this by showing how two species concepts (biological and ecological) have been modified from their initial eukaryotic applications to apply to prokaryotes. Second, both within and between patches, distinct species concepts may interact and hybridize. We thus defend (...) a semantic picture of the species concept as a collection of interacting patchwork structures. Thus, although not all uses of the term pick out the same kind of unit in nature, the diversity of uses reflects something more than mere polysemy. We suggest that the emphasis on the use of species to pick out natural units is itself problematic, because that is not the term’s sole function. In particular, species concepts are used to manage inquiry into processes of speciation, even when these processes do not produce clearly delimited species. (shrink)

Analytic Philosophy: An Interpretive History explores the ways interpretation shaped the analytic tradition, from Frege to Dummet. It offers readers 17 chapters, written especially for this volume by an international cast of leading scholars. Some chapters are devoted to large, thematic issues like the relationship between analytic philosophy and other philosophical traditions such as British Idealism and phenomenology, while other chapters are tied to more fine-grained topics or to individual philosophers, like Moore and Russell on philosophical method or the history (...) of interpretations of Wittgenstein’s _Tractatus_. Throughout, the focus is on interpretations that are crucial to the origin, development, and persistence of the analytic tradition. The result is a more fully formed and philosophically satisfying portrait of analytic philosophy. (shrink)

The trouble with theory and practice -- Preparing a place for a Peircean ethics -- Intelligent habits -- The metaphysics of habits -- Thinking of habits -- Self-controlled habits.

Introduction -- Logics of extraction -- Materialism & critical materialism -- Methodological parrhesia: truth-telling -- Methodological materiality: towards productive social change.

The American conservative movement is a force of anti-reflexivity insofar as it attacks two key elements of reflexive modernization: the environmental movement and environmental impact science. Learning from its mistakes in overtly attacking environmental regulations in the early 1980s, this counter-movement has subsequently exercised a more subtle form of power characterized by non-decision-making. We examine the conservative movement’s efforts to undermine climate science and policy in the USA over the last two decades by using this second dimension of power. The (...) conservative movement has employed four non-decision-making techniques to challenge the legitimacy of climate science and prevent progress in policy-making. We argue that reflexive modernization scholars should focus more attention on similar forces of anti-reflexivity that continue to shape the overall direction of our social, political and economic order, and the life chances of many citizens. Indeed, better understanding of the forces and effectiveness of anti-reflexivity may very well be crucial for societal resilience and adaptation, especially in the face of global environmental problems like climate change. (shrink)

In Sounds, Ecologies, Musics, authors pose exciting challenges and provide fresh opportunities for scholars, scientists, environmental activists, and musicians to consider music and sound from ecological standpoints. The book covers topics such as how environment enables music and sound, how music and sound relate to Western environmental science, and mutidisciplinary collaborations among scholars.

Do powers have parts? Mereological thinking is typically guided by two different metaphors: building versus carving. The building picture treats wholes as constructed from fundamental bits; the carving treats wholes as the result of carving some interconnected space. After considering some suggestions for how to view powers as built from other components, this chapter opts for the carving picture and suggests that a mereology of powers can be generated by carving the underlying space of an interconnected web of fundamental powers. (...) The space of powers is a network of manifestation/triggering connections that can be modelled graph-theoretically where the identity of a fundamental power is importantly tied up with its position in the overall structure. This chapter considers the idea that powers are completely identified by their position in the structure (as pandispositionalists have thought), which then places limits on the sorts of structures that powers theorists can help themselves to. This chapter also considers another novel suggestion on the identity of powers borrowed from non-well-founded set theory. It shows how to identify principles governing ‘carving’ the web into groups of closely connected powers, such that one group can naturally be called ‘part’ of another group, and explore the resulting mereology. (shrink)

Political constructivism is associated with John Rawls more than any other contemporary philosopher. This chapter suggests that Rawls's political constructivism is better understood as a general method of justification which runs throughout his work as a whole, including his early work and A Theory of Justice. The chapter develops the general characterization of Rawls's political constructivism. Its main elements are taken in turn and developed with special attention to the two places where Rawls discusses the topic in depth – his (...) Dewey Lectures on Kantian Constructivism in Moral Theory and its substantially revised version called “Political Constructivism” (PL, Lecture III). The main elements include social role, sources, interpretive basis, representation and conclusion. Rawls endorsed a Kantian metaethical constructivism in part because it offered a way of more deeply characterizing how his previous political constructivism could be a live and distinct possibility. (shrink)

We identify a species of experiment—Kon-Tiki experiments—used to demonstrate the competence of a cause to produce a certain effect, and we examine their role in the historical sciences. We argue that Kon-Tiki experiments are used to test middle-range theory, to test assumptions within historical narratives, and to open new avenues of inquiry. We show how the results of Kon-Tiki experiments are involved in projective inferences, and we argue that reliance on projective inferences does not provide historical scientists with any special (...) protection against the problem of unconceived alternatives. (shrink)

Prior research on the influence of various ways of framing anthropogenic climate change do not account for the organized ACC denial in the U.S. media and popular culture, and thus may overestimate these frames' influence in the general public. We conducted an experiment to examine how Americans' ACC views are influenced by four promising frames for urging action on ACC —when these frames appear with an ACC denial counter-frame. This is the first direct test of how exposure to an ACC (...) denial message influences Americans' ACC views. Overall, these four positive frames have little to no effect on ACC beliefs. But exposure to an ACC denial counter-frame does significantly reduce respondents' belief in the reality of ACC, belief about the veracity of climate science, awareness of the consequences of ACC, and support for aggressively attempting to reduce our nation's GHG emissions in the near future. Furthermore, as expected by the Anti-Reflexivity Thesis, exposure to the ACC denial counter-frame has a disproportionate influence on the ACC views of conservatives, effectively activating conservatives' underlying propensity for anti-reflexivity. (shrink)

From the very first scene of The Good Place, monumental duplicity is at work. Everything is contrived and everyone is lying, both to themselves and to one another. The Good Place raises the issue of how to determine whether a person is ethical or not. Both Eleanor and Tahani struggle with significant feelings of inadequacy, compelling them to commit ethical infractions to land them in “The Good Place”. Although Tahani and Eleanor come from divergent social stations, they share a common (...) legacy of familial abuse that deeply affected their sense of self‐worth, causing them to relentlessly exploit and abuse others in their attempts to gain a positive self‐image. The Good Place reminds that in our lives we are constantly confronted by ethical dilemmas that challenge us to make choices, and all we have for guidance are flawed, often conflicting ideals that we pick up along the way. (shrink)

In Sons of Anarchy, the male members of the MC are only one part of the story, as the Charming women play equally pivotal roles in the action. This chapter takes a look at the women to see how they wield their power, what they do with it, and how it is limited by the world in which they operate. The stories told on Sons of Anarchy are familiar to us. The character's lives ebb and flow with hopes and fears, (...) gains and losses, friendship and enmity, love and resentments, and regrets and triumphs that we can identify with. We ride alongside the characters as they strive for the ideals that make life worth living, such as friendship, love, and happiness, though none of the characters seems to have achieved these ideals perfectly in their lives. (shrink)

A History of Scottish Philosophy is a series of collaborative studies by expert authors, each volume being devoted to a specific period. Together they provide a comprehensive account of the Scottish philosophical tradition, from the centuries that laid the foundation of the remarkable burst of intellectual fertility known as the Scottish Enlightenment, through the Victorian age and beyond, when it continued to exercise powerful intellectual influence at home and abroad. The books aim to be historically informative, while at the same (...) time serving to renew philosophical interest in the problems with which the Scottish philosophers grappled and in the solutions they proposed. -/- This is a companion volume to Scottish Philosophy in the Eighteenth Century, Volume I. Where Volume I covered Scottish Enlightenment contributions to morals, politics, art, and religion, this second volume covers philosophical method, metaphysics, and the philosophy of mind. It includes a comprehensive account of the teaching of philosophy in Scottish universities in the eighteenth century. Particular attention is given to Scottish achievements in the science of the mind in chapters on perception, the intellectual powers, the active powers, habit and the association of ideas, and language. (shrink)

History was a continuous cycle driven by the gods. Societies began by being small, impoverished, and insignificant, then became great, then proud and decadent, and finally were overthrown by a different small, impoverished people, with the cycle beginning anew. Herbert's historical universe in Dune is bound within a series of ever repeating cycle. Herbert's themes about human action, fatalism versus free will, and the repetition of religious motifs across vast distances of space and time. Greek mythology and tragedy appear on (...) the very first page of Dune with the use of a single word: Atreides. Much like in the Dune series, History emerged in the ancient Greek world by combining mythology, epic narrative, and tragedy. The Golden Path is the death of the constant cycles of imperialism and the freeing of humanity from constantly repeating old mistakes. (shrink)

This paper investigates the complexity hypothesis in microbial evolutionary genetics from a philosophical vantage. This hypothesis, in its current version, states that genes with high connectivity are likely to be resistant to being horizontally transferred. We defend four claims. There is an important distinction between two different ways in which a gene family can persist: vertically and horizontally. There is a trade-off between these two modes of persistence, such that a gene better at achieving one will be worse at achieving (...) the other. At least some genes are likely to experience selection favoring increased transferability. One consequence of this can be encapsulated as the “simplicity hypothesis”: horizontally persisting genes will experience selection favoring reduced connectivity. In order to make sense of the simplicity hypothesis, we need to consider evolutionary populations that transcend species boundaries. Vertical and horizontal persistence are therefore not two competing ways of succeeding at the same game, but involve playing two different games altogether. The complexity hypothesis can be understood in terms of two related notions: entrenchment and Cuvierian functionalism. This framing reveals previously unrecognized and philosophically interesting connections between reasoning about deep conservation and horizontal transfer. (shrink)

This dissertation compares the thought and practice of Xunzi, a 4th--3rd century BCE Confucian, with that of Augustine of Hippo, a 4th--5th century CE Christian. Specifically, it compares their versions of the view that human nature is significantly bad or evil, and their prescriptions for the cultivation of ethically and religiously preferable modes of life, through the practice of what Pierre Hadot has called "spiritual exercises." ;Xunzi and Augustine deploy conceptual apparatuses structured by distinctive terms of art, responding to debates (...) within their own contexts. Their articulations of human personhood deeply shape their proposals and hopes for personal cultivation. This thesis examines their different anthropologies, with special attention to Augustine's concept of natura and Xunzi's idea of xing, both traditionally rendered in English as "human nature." It then discusses their positive proposals for ethico-religious education and personal cultivation, focusing on the specific practices they recommend and their accounts of how and why these practices are effective in the production of flourishing human beings. It explores Xunzi's opposition of "nature" and "artifice," his analysis of emotion, desire, and action, and his accounts of study, ritual practice, and music as spiritual exercises. It investigates Augustine's views of original sin and the mind imaging God, his account of disciplina "teaching" and "discipline," and his understandings of the liberal arts, learning from scripture, fasting, the Eucharist, and different types of prayer. ;Comparison of Xunzi and Augustine makes three contributions. First, it refines our analytical categories as students of religious thought and practice, especially in this case "human nature" and "spiritual exercises." Second, it illuminates both thinkers' views more fully, in particular deepening our understanding of Xunzi's moral psychology and Augustine's theories of Christian formation after "conversion" and baptism. Third, it contributes to contemporary debates in religious ethics: first, about moral personhood, proposing a new model of "chastened intellectualism" but underscoring the limitations of universalistic accounts; and second, about spiritual exercises, retrieving elements of Xunzi's account of ritual and Augustine's techniques for affecting one's inner discourse of interpretation and judgment. (shrink)