16
Wilfrid Sellars
Evolutionary Naturalism (1922). In the Introduction to Naturalism
and Ontology (1980), Sellars says a few words to explain his growing
connection to both pragmatism and naturalism over the course of his
career:
As for Naturalism. That, too, had negative overtones at home. It
was as wishy-washy and ambiguous as Pragmatism. One could
believe almost anything about the world and even some things
about God, and yet be a Naturalist. What was needed was a new,
nonreductive materialism. My father could call himself a Materi-
alist in all good conscience, for at that time he was about the only
one in sight. I, however, do not own the term, and I am so sur-
prised by some of the views of the new, new Materialists, that
until the dust settles, I prefer the term ‘Naturalism,’ which, while
retaining its methodological connotations, has acquired a sub-
stantive content, which, if it does not entail scientific realism, is
at least not incompatible with it. (NAO: 1–2)
Standardly, naturalism has both an ontological and an epistemologi-
cal and/or methodological component, and, as we see above, Sellars
wants both aspects in play.
Ontologically, everything that exists is in nature, but ‘nature’ is as
ill-defined as ‘naturalism’ itself. Naturalism is at least a rejection of the
spooky or supernatural, but it has also been interpreted to be a rejec-
tion of Platonic forms, of Cartesian minds and/or of Kantian noumena,
and Sellars would agree with these rejections. For Sellars, naturalism
includes the thesis that everything that exists is an element in the
spatiotemporal causal nexus. He rejects, therefore, any kind of pur-
ported causal or metaphysical dependence on something outside space
and time, such as God, souls, forms or other pure intelligibles.
Epistemologically, naturalism is often construed as a commitment
to seeing the empirical methods of the natural sciences as paradigms
of knowledge acquisition, but there are non-naturalistic interpreta-
tions of those methods. Perhaps it is better to see the epistemological
dimension as a commitment to the idea that the acquisition of
knowledge is itself a natural process within the causal order. Some
naturalistic philosophers interpret this to mean that the study of
knowledge (epistemology) must itself then be construed as the empiri-
cal study of knowledge acquisition. Thus, cognitive psychology
ultimately replaces epistemology. This seems to carry along with it a
rejection of any a priori or normative constraints on (or within) the
knowledge acquisition process, for any a priori or normative element