In this podcast, Dr. Jonathan Fuller and Prof. Matthew Parrott discuss delusions, a concept that raises several questions from a philosophical perspective. They share their views on the nature of belief, and what is going on in a person’s mind during delusional thinking.Professor Matthew Parrott is from the Department of Philosophy at the University of Birmingham in the UK. Dr. Jonathan Fuller is assistant professor of history and philosophy of science at the University of Pittsburgh and a recent graduate of the University of Toronto medical school. For more philosophical discussions related to medicine, visit www.philosophersonmedicine.comFull humanities article: www.cmaj.ca/lookup/doi/10.1503/cmaj.190048-----------------------------------Subscribe to CMAJ Podcasts on Apple Podcasts, iTunes, Google Play, Stitcher, Overcast, Instacast, or your favourite podcast app. You can also follow us directly on our SoundCloud page or you can visit www.cmaj.ca/page/multimedia/podcasts.