Starts out strong, with a firm scientific foundation and presents several thought-provoking theories, historical disputes and various apocrypha. At times, it made me wish I was considerably more physics savvy, as I felt some of the stories could lead the right kind of listener into just the right kind of inspiration to turn the field on its head. Gradually it heads to softer territory, and by the time it starts venturing into philosophizing on the spiritual and artistic, the book had lost most of its charm. The author always treads a narrow path, presenting his subjects’ thoughts alongside his own, but by the end, it seemed he’d lost a bit of his intellectual rigor in presenting his own conclusions. Good enough in the beginning to save it from dropping too far in a rating, though.