Four years ago, I reported on the Interfaith Youth Core, which trains leaders to build relationships and respect between diverse faith communities. The work has expanded considerably. The organization now has more than 350 active campuses in its network, and more than 1,000 colleges have used its resources. This year its founder, Eboo Patel, explained in a book, Interfaith Leadership, what this type of leadership entails and why he considers it vital in today’s world. Patel, who is Muslim, recently spoke with me about democracy, the responsibilities of citizens, and his fears and hopes after this year’s election.