Abstract I discuss fi ve basic objections that materialists often raise to Cartesian Mind-Body Dualism: (1) It is not empirically testable or confi rmable; (2) It is in principle testable and confi rmable, but unconfi rmed; (3) It is testable and confi rmable, but has been shown false; (4) It is unnecessary to explain anything; (5) It cannot serve to explain anything. I will show how unsatisfactory all these objections are. If I am right in what I argue the reductionist posture of contemporary materialism against the existence of Cartesian Immaterial Substances as causal agents in explain-ing human behavior is demonstrably more dogma than anything else. Moreover, the promise of reductive materialism to explain human personality, consciousne...