Vigorously demonstrating the relevance of reasoning to important moral problems, the participants in this dialogue resist the temptations of strident emotional appeal in an effort to present the most honorable and intellectually sophisticated sides of their arguments. This effort leads them to consideration of ante-bellum slavery, to a comparison of the notions of absolute truth in ethics versus mathematics, and to constructive discussions of genetics, artificial intelligence, euthanasia, personal identity, human sexuality, and Roe v. Wade.