Inspired by her own struggles, Harvard Business School historian Nancy Koehn turned to figures from the past who overcame adversity to leave a lasting mark on civilization. She learned that true leaders are those who can forge through impossible odds with intelligence, compassion and resilience. Koehn has captured the stories of five inspiring historical figures in her book, Forged In Crisis: The Power of Courageous Leadership in Turbulent Times . They include Abraham Lincoln, who presided over the United States at a pivotal time in its young history; Frederick Douglass, an abolitionist who escaped slavery to become a writer and a statesman; Dietrich Bonhoeffer, a German clergyman who became a double agent against the Nazis; Ernest Shackleton, a polar explorer who survived a shipwreck on an ice floe; and Rachel Carson, a scientist whose work sparked the modern environmental movement.…