Book excerpt: In this meditation on religion and science, Lightman explores the tension between our yearning for permanence and certainty, and the modern scientific discoveries that demonstrate the impermanent and uncertain nature of the world. As a physicist, he has always held a scientific view of the world. But one summer evening, while looking at the stars from a small boat at sea he was overcome by the sensation that he was merging with a grand and eternal unity, a hint of something absolute and immaterial. This is his exploration of these seemingly contradictory impulses, and the journey along the different paths of religion and science that become part of his quest. -- adapted from publisher info.