Naturalism and Dualism in the Study of Language and Mind

The terms of the title can be understood in various ways, along with the frameworks in which they are embedded. I would like to outline interpretations that I think are useful and proper, and to suggest a more general thesis, which would require much more comprehensive argument: that there is no coherent alternative to proceeding in this way for the range of issues addressed, and that other endeavors in roughly the same realm are clarified and facilitated if understood as extensions of the approach outlined.