We live in an age of crisis. Financial crisis, political crisis, environmental crisis—the list goes on. We're confronted with calamity every time we read the headlines. But behind each of these lurks another kind of crisis, one we find harder to define: a moral crisis—a crisis of goodness. Behind financial crisis is unrestrained greed; behind political crisis is the lust for power. To properly address the crises that plague our world, we must be formed as people of moral goodness. We must cultivate virtue. But the cultural headwinds are strong: outrage and fragility, persecution and...