Xavier Le Pichon is Honorary Professor at Coll\xe8ge 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 \u201cXavier Le Pichon \u2014 The Fragility at the Heart of Humanity.\u201d Find more at onbeing.org.