Why is there a universe rather than nothing? What are the reasons for the world's complexity? What is the purpose of our lives and what are the secrets of our future? This work attempts to answer these and other questions from the perspectives of some of the most influential and relevant thinkers of our time. In doing so, it sheds new light on the nature, purpose, and ultimate destiny of our universe. The mysteries of existence impact each and every aspect of our being. Whether or not we find God a compelling hypothesis, the decision we make about it could be the most important we ever make.