Listen now (73 min) | Defining "moral realism" ... Cognitivists vs. noncognitivists ... Are moral beliefs just expressions of human desires? ... Human happiness is better than human suffering...right? ... Considering whether you can be both a Darwinian and a moral realist ... Moral progress, teleology, and mysticism ... Why you "have to take something for granted" in any philosophical system ... The bedrock sources of meaning in life ... If life has meaning, does moral realism logically follow? ...