Please note: This is a companion version & not the original book. Sample Book Insights:#1 I am not suggesting that science can give us an evolutionary or neurobiological account of what people do in the name of morality. I am arguing that science can, in principle, help us understand what we should do and want, and what other people should do and want to live the best lives possible.#2 There is no such thing as moral truth, only moral preference, opinion, and emotional reactions. However, we can understand how human beings think and behave in the name of morality.#3 It is true that moral facts are subjective, but this does not mean that all talk of morality is subjective. I am not denying the necessarily subjective component of the facts under discussion when I say that there are right and wrong answers to moral questions.#4 The idea of moral truth is difficult to discuss because people often use a double standard when thinking about consensus: they consider scientific consensus to mean that scientific truths exist, and they consider scientific controversy to be merely a sign that more work remains to be done.