Strawson, Peter F. - Skepticism and Naturalism: Some Varieties

The term "naturalism" is elastic in its use. The fact that it has been applied to the work of philosophers having as little in common as Hume and Spinoza is enough to suggest that there is a distinction to be drawn between varieties of naturalism. In later chapters, I shall myself draw a distinction between two main varieties, within which there are subvarieties. Of the two main varieties, one might be called strict or reductive naturalism (or, perhaps, hard naturalism). The other might be called catholic or liberal naturalism (or, perhaps, soft naturalism).