Xavier Le Pichon is Honorary Professor at Collège de France in Paris. He founded La Maison Thomas Philippe that provides retreats for families, including those struggling with mental illness. This interview is edited and produced with music and other features in the On Being episode “Xavier Le Pichon — The Fragility at the Heart of Humanity.” Find more at onbeing.org. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.