 But the view just outlined, though widespread, represents a fundamental misapprehension of Ryle’s work. First, Cartesianism is dead in only one of its ontological aspects: substance dualism may well have been repudiated but property dualism still claims a number of contemporary defenders. The problem of finding a place for the mental in the physical world, of accommodating the causal power of the mental, and of accounting for the phenomenal aspects of consciousness are all live problems in the philosophy of mind today because they share some of the doctrine’s ontological, epistemological, and semantic assumptions.