They discuss right brain/left brain hemispheric specialization, the basis of delusion, "unknowing" as a necessary step toward wisdom, consciousness and the divine ground of being, and the imposition of mediocrity in the modern West.

Dr. Iain McGilchrist is a psychiatrist, neuroscience researcher, philosopher and literary scholar. He is a Quondam Fellow of All Souls College, Oxford, an Associate Fellow of Green Templeton College, Oxford, a Fellow of the Royal College of Psychiatrists, and former Consultant Psychiatrist and Clinical Director at the Bethlem Royal & Maudsley Hospital, London. He has been a Research Fellow in neuroimaging at Johns Hopkins Hospital, Baltimore and a Fellow of the Institute of Advanced Studies in Stellenbosch. He has published original articles and research papers in a wide range of publications on topics in literature, philosophy, medicine and psychiatry. He is the author of a number of books, but is best-known for The Master and his Emissary: The Divided Brain and the Making of the Western World (Yale 2009). In November 2021 his two-volume work The Matter with Things: Our Brains, Our Delusions, and the Unmaking of the World was published by Perspectiva Press.