Get a taste of season 2 of the FRICTION podcast. The best leaders cultivate empathy, patience and an awareness of their own vulnerabilities, says Nancy F. Koehn, a historian at the Harvard Business School. She’s the author of Forged in Crisis: The Power of Courageous Leadership in Turbulent Times, about the zigzagging paths of five historical figures, from Abraham Lincoln and Frederick Douglass to environmentalist Rachel Carson. In this episode, Koehn speaks with Stanford Professor Bob Sutton about how transformational leaders slow down and harness their humanity to overcome significant challenges.