  The Mental is accommodated in the same way. Although Mind is unquestionably real, mental facts are as spatio-temporally located as any others (“The Existence of Consciousness”, “Mind as a Matter of Fact” 1966, pp 23–40, 239–261). The Mental is not an independent realm parallel to and equal to the Material, but rather a tiny, rather insignificant fragment of Being, dependent upon, even if not reducible to, the physical or biological nature of living beings. Williams has a capacious conception of the Material—his position could perhaps be better described as Spatio-Temporal Naturalism.