An argument is presented, based on a common-sense interpretation of an everyday experience, for emergent dualism as the best available account of the origin of the human mind/soul. Emergent dualism is superior to subjective idealism in that it honors the common-sense conviction that the things we encounter have a real, physical existence, separate from our mental perceptions of them. It is superior to materialism in that it allows for our mental states to have real, physical effects, distinct from the effects of the physical states that accompany the mental states. It is also superior to materialism in allowing for a real, unified self that is not merely a collection of physical particles. These features allow emergent dualism to provide a foundation for libertarian free will; belief in such free will is another deliverance of common sense that cannot readily be reconciled with materialism. Emergent dualism is superior to standard varieties of dualism in giving a plausible account of the minds of non-human animals. Perhaps surprisingly, emer gent dualism is superior both to traditional dualism and to standard varieties of materialism in combining readily with theories of biological evolution, in which natural selection promotes both the physical and mental development of complex organisms.