Towards a Reformed Liberal and Scientific Naturalism

The purpose of this paper is threefold: First, I provide a framework – based on Sellars' distinction between the manifest and the scientific image – for illuminating the distinction between liberal and ‘orthodox’ scientific naturalism. Second, I level a series of objections against expanded liberal naturalism and its core commitment to the autonomy of manifest-image explanations. Further, I present a view which combines liberal and scientific naturalism, albeit construed in resolutely non-representationalist terms. Finally, I attempt to distinguish my own (Sellars- and Peirce-inspired) position from the very similar pragmatic liberal naturalist view, that of Huw Price. I do this by suggesting that a ‘monistic’ Peircian evolutionary naturalism which accepts the Sellarsian scientia mensura principle not only is consistent with ungrudging recognition of the irreducibility of normative facts and the plurality of our discursive practices, but also shows how this irreducibility, by being understood in terms of an evolution-by-selection of a population of perceptual-practical-inferential habits, can be at the same time considered as naturalistically explicable – without any appeal to an expanded manifest-image conception of nature.