Sam Harris speaks with Peter Singer about important problems in ethics. They discuss his career as a philosopher, the moral status of non-human animals, the ethics of moral hierarchies, speciesism, the scale of animal suffering, conscientious omnivores, animal experimentation, the tragic case of Sam Bankman-Fried, concerns about Effective Altruism, the problems with focusing on existential risk, the comparative nature of human suffering, the work of Derek Parfit, objective morality, and other topics. If the Making Sense podcast logo in your player is BLACK, you can SUBSCRIBE to gain access to all full-length episodes at samharris.org/subscribe.   Learning how to train your mind is the single greatest investment you can make in life. That’s why Sam Harris created the Waking Up app. From rational mindfulness practice to lessons on some of life’s most important topics, join Sam as he demystifies the practice of meditation and explores the theory behind it.