This compendium contains profiles of leaders, such as John Calvin, Ibn al-Arabi, Hillel the Elder, and Gobind Singh, who have had a major impact on religious thought. It also offers discussions of various concepts, such as monotheism, creationism, and deism, which give readers a broader understanding of religion. The book uses a broad non-deistic definition of religion and touches on Hinduism, Sikhism, Buddhism, Judaism, Christianity, Islam, Confucianism, Taoism, and more. An instructive, balanced volume on an often-contentious topic.