The Varieties of Self Knowledge

When does the Jewish Sabbath begin? Who are Vishnu and Shiva? What are Buddhism's Four Noble Truths? What are the Five Pillars of Islam? These questions are more than an academic exercise. Religious belief has been innate to humans everywhere and in every age, from the time of the Neanderthals to the 21st century. It's also one of the strongest motivators of human behavior and has a profound impact on all aspects of our culture—our spiritual beliefs, our rituals, our politics, and the very foundations of our democracy.