“It was the summer when fireflies showed up in Saint-Malo, and their father was very excited, building long-handled nets for his boys and giving them jars with wire to fasten over the tops, and Etienne and Henri raced through the tall grass as the fireflies floated away from them, illuming on and off, always seeming to rise just beyond their reach, as if the earth were smoldering and these were sparks that their footfalls had prodded free.”