A Naturalized Context of Moral Reasoning

American philosophy of the past century seems to have availed itself of the advances in science primarily under the rubric of philosophy of science, especially using physics as the exemplar of scientific inquiry and almost entirely in service of developing an adequate epistemology (and related logic). Though there has been some philosophical work using biological sciences as areas of inquiry, this is most often a matter of investigating either the logic or content of the life sciences as it relates to that of physics or chemistry; for example, trying to determine the proper method and scope of reduction. Cognitive science has been a fruitful avenue for philosophy of mind, but in most cases the dominant model sees mind as “software” able to be understood independently of the process of evolution that led to the human brain.

Very little work (until the past half decade) has used advances in the life sciences as fodder for philosophic speculation in areas such as ethics, aesthetics, metaphysics, and so on, though some subfields, like medical ethics, provide exceptions. American pragmatic naturalists, on the other hand, from the second half of the ninteenth century into the middle of the twentieth, insisted that the content of the life sciences was essential in understanding human nature. John Dewey, for example, thoroughly incorporated the premise of humans as biological organisms making our way in environments that must be navigated using natural powers and natural solutions to impediments to action. George Herbert Mead provides another example of a fully naturalized conception of human existence, especially as biological organisms in social interaction in various spheres.

What I am particularly concerned with here is making sense of the moral sphere with a conception of the human subject as a product of evolution and both socially constituted and uniquely integrated in an environment (more carefully—a related suite of environments). The beginning point of this re-framing is in Mead’s notion of the social constitution of human being. Most readers of Mead take up such constitution only in the arena of what Mead calls “significant gesture,” using spoken language, especially in propositional form, as exemplary and as providing the foundation for mind, self-consciousness, and so on. But Mead’s concept of sociality is much wider in scope than this; the concept is fundamental to his cosmology. Furthermore, Mead’s notion of sociality is closely linked to his claim that the emergence of true novelty is possible in a fully naturalized cosmos.

Without exploring in greater depth Mead’s contribution to thinking about sociality as a precondition for the most fundamental natural processes,² I would like to use a broadened version of this to frame some contemporary work in biology, ecology, and cognitive science as they relate to human existence, especially in terms of how we may think productively about the moral sphere.

In earlier work, I noted that there is a ubiquitous premise in Western moral theories that I believe is mistaken—or at least worthy of serious reconsideration. Most moral theory takes as axiomatic that whatever feature makes us uniquely human is the same feature that, when perfected, makes us moral. That is, that being “good” at being human makes us “good” humans. This is obviously so for Aristotle, insofar as it is rationality that is our special ergon, and it is using rationality well and beautifully that constitutes human virtue. But I think similar assumptions underlie much of moral theory, ancient and modern, and extend to contemporary work that takes language (or concept) use as peculiarly human and sees linguistic (or conceptual) analysis of moral claims as the proper domain of ethical theory.

It seems that this presupposition, in part insisting that morality is uniquely human, is put in question if we take seriously evolution through natural selection and understand the human species to be as much a product of natural selection as any other species. There has been a good deal of ethological work done in the past several decades pointing out the protomoral capacities of other highly social animals, especially in those species to which we are most closely related (see, for example...