The tumultuous 17th century Enlightenment created the modern mind. What were the radical forces that shaped this intellectual world view we still share? And how is this under threat today? A.C. Grayling is the Master of the New College of the Humanities, London, and its Professor of Philosophy, and the author of over thirty books of philosophy, biography, history of ideas, and essays. His books, The Age of Genius, was published in April 2016 and The History of Philosophy was published in 2019 respectively.