Chris Letheby is a philosopher of mind and cognitive science who works on issues arising from the use of psychedelic drugs in psychiatry and neuroscience. His doctoral research, conducted at the University of Adelaide, presented the first systematic analysis of the psychedelic experience within the framework of 21st century philosophy of cognitive science. He is currently Lecturer in Philosophy at the University of Western Australia and Postdoctoral Researcher at the University of Adelaide. He is the author of a wonderful new book entitled Philosophy of Psychedelics. Today we talk about how to reconcile psychedelic experiences with naturalism.