“Alan Lightman brings a light touch to heavy questions. Here is a book about nesting ospreys, multiple universes, atheism, spiritualism, and the arrow of time. Throughout, Lightman takes us back and forth between ordinary occurrences—old shoes and entropy, sailing far out at sea and the infinite expanse of space. “In this slight volume, Lightman looks toward the universe and captures aspects of it in a series of beautifully written essays, each offering a glimpse at the whole from a different perspective: here time, there symmetry, not least God. It is a meditation by a remarkable humanist-physicist, a book worth reading by anyone entranced by big ideas grounded in the physical world.”—Peter L. Galison, Joseph Pellegrino University Professor, Harvard University