While not especially detailed, Lightman provides a unique perspective on the existential questions that most humans have asked themselves at least once in their lives. He does so by outlining the primary concepts behind various schools of thought, which collectively paints a rather sobering view of our physical world and its clear lack of permanence.
This book is not entirely somber nor joyful, Instead, the physicist and author provides an objective evaluation of our place in the universe, while acknowledging the potential multitude of universes we cannot see, as well as the myriad of potential deities that control an afterlife we won’t ever confirm.