Starting in 19th century, the Great Enrichment sparked unprecedented prosperity around the world. Yaron Brook talks to Deirdre McCloskey about what caused it--and why those lessons remain important to the future of progress.

Deirdre Nansen McCloskey is Distinguished Professor Emerita of Economics and of History, and Professor Emerita of English and of Communication, adjunct in classics and philosophy, at the University of Illinois at Chicago. Trained at Harvard in the 1960s as an economist, she has written twenty-four books, including the Bourgeois Trilogy.