John D. Barrow is Professor of Mathematical Sciences and Director of the Millennium Mathematics Project at Cambridge University, Fellow of Clare Hall, Cambridge, a Fellow of the Royal Society, and the current Gresham Professor of Geometry at Gresham College, London. His principal area of scientific research is cosmology, and he is the author of many highly acclaimed books about the nature and significance of modern developments in physics, astronomy, and mathematics, including The Left Hand of Creation; The Origin of the Universe; The Universe that Discovered Itself; The Infinite Book, The Artful Universe Expanded, New Theories of Everything and, most recently, 100 Essential Things You Didn't Know You Didn't Know. He is also the author of the award-winning play Infinities.