"The Moral Landscape" is a book by Sam Harris that explores the relationship between science and morality. Harris argues that moral values can be understood through a scientific framework, suggesting that human well-being can be measured and improved based on objective facts about the world. In the book, Harris challenges the idea that morality is purely subjective or culturally relative. He posits that there are right and wrong answers to moral questions, which can be discovered through reason and empirical evidence, ultimately aiming to create a more ethical society based on a shared understanding of human flourishing.