The Expanding Circle

In "The Expanding Circle," Peter Singer explores the foundations of ethics, questioning whether moral standards stem from emotions, reason, or our biological makeup. He argues that while altruism originated as a drive for kin and community protection, it has evolved into a more expansive ethical perspective. By integrating philosophy and evolutionary psychology, he posits that human morality is not solely rooted in biology, emphasizing the importance of reasoning for moral progress. The audiobook includes a new afterword reflecting on recent research related to the evolution of morality.