A democracy has never succeeded in being both diverse and equal. Yet, treating members of many different ethnic or religious groups fairly is central to the democratic project in countries around the world. It is, Yascha Mounk argues, the greatest experiment of our time. In The Great Experiment: Why Diverse Democracies Fall Apart and How They Can Endure, Mounk examines how diverse societies have long suffered from the ills of domination, fragmentation, or structured anarchy and shows that the past can offer crucial insights for how to do better in the future. The CFR Fellows’ Book Launch series highlights new books by CFR fellows. This meeting is part of the Diamonstein-Spielvogel Project on the Future of Democracy.