Naturalism dominated twentieth century American philosophy.1 Naturalism is a philosophical worldview that relies upon experience, reason, and especially science for developing an understanding of reality. Naturalism demands that these three modes of understanding together shall control our notion of reality. Varieties of naturalism emerge because the many essential factors of experience, reason, and science can be coherently related in numerous ways. All naturalisms demand that experience, reason, and science be taken most seriously so that no fourth mode of understanding can (...) be permitted to override them. This triadic unity moderates the excesses of phenomenalism and idealism, and filters out spiritualism and .. (shrink)