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The achievement of this task depends on attaining to the true distinction, the real relation, between the two orders of existence which to ordinary and uncritical reflexion — usual common-sense — appear as two substances, so called, or species of substance, and are named "mind" and "matter." What is to be shown is, that this common-sense contrast, read off as a hard-and-fast dualism, is not intelligibly interpretable except as the distinction between two aspects of one and the same total nature in the beings that possess it
— GEORGE HOLMES HOWISON