Is Morality Grounded in Nature, Utility, or God?

Just as there are three possible sources for moral obligations (determined, designed, or discovered—see previous video), there are three competing ideas offered today for the grounding of morality. Can one derive objective moral principles from naturalism or utilitarianism or must moral law be grounded in God alone? In this last of a four-part series, Lenny discusses the problems with both naturalistic and utilitarian view of morality and shows why moral values and duties are rooted in God and his laws.