Steven Weinberg is perhaps the most accomplished living theoretical physicist. Now based at the University of Texas at Austin, he has made substantial contributions to our understanding of all the fundamental forces of Nature. In this podcast, he reflects on his career in physics, the 'golden years' in which he and others put the finishing touches to the Standard Model of particle physics, and his views about the future of theoretical physics. This is one of a series 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