Freeman Dyson talks about his being both a theoretical physicist and a mathematician, the troubled relationship between mathematics and physics in his youth, the impressive physicist he knew (no, it’s not Feynman) and string theory. This interview was recorded last summer at the IAS, Princeton, in Freeman’s office – and he’s as lively, counter-orthodox and fearless as ever. This is one of a number of interviews given by world-class experts to Graham on the themes he explores in his new book The Universe Speaks in Numbers. For information regarding your data privacy, visit acast.com/privacy