In this book, Siegel explores the nature of the mind, offering an interdisciplinary framework that addresses fundamental questions such as "What is the mind?" and "How do we develop a healthy mind?" By bridging psychology, neuroscience, linguistics, and philosophy, Siegel provides a comprehensive understanding of the connections between the mind, brain, and relationships. Through an innovative format that mirrors the brain’s natural learning process, readers can dive into various entry points to explore integrated knowledge. The book also introduces interpersonal neurobiology, demonstrating its practical applications in cultivating a healthy mind, an integrated brain, and empathic relationships.