Legendary investor and Vanguard founder John “Jack” Bogle passed earlier this month at the age of 89. Bogle is credited with making the investment industry accessible to millions of people because of his development of low-cost, low-fee indexed funds. Vanguard, which Bogle started in the late 1970s, now has over $5 trillion in investor assets. Host Dan Loney talks with Jeremy Siegel, Professor of Finance at the Wharton School, and Burton Malkiel, former Director of the Vanguard Group, Chief Investment Officer at Wealthfront, and Economics Professor Emeritus at Princeton University, about their memories of John Bogle and their insights on his legacy on Knowledge at Wharton.