Alice and John discuss The Moral Landscape by Sam Harris, focusing on key ideas. Harris argues that science can determine moral truths by examining human well-being and introduces the "moral landscape" as a metaphor for different levels of well-being. They explore Harris' critique of religious beliefs, the illusion of free will, and how biases shape our moral convictions. The conversation touches on psychopathy, the neuroscientific basis of morality, and Harris' rejection of the soul as separate from the brain. Lastly, they address cultural relativism and how science can guide moral progress by focusing on well-being.