Speaking of loneliness, I once played with light as a friend. When my brother-in-law, who was much older than me and a physicist, was visiting one summer, he showed me how to capture light in a small mirror and project it onto a wall. After he left, I played with the light for hours and hours in an otherwise dark hallway, the one that led to my parents’ separate bedrooms and to my bedroom and to everything that happened in them. I don’t know what I thought I was going to accomplish by getting a ball of light to bounce around on those nicotine-beiged walls, but I knew it was better than going it alone in that house. My light friend was everything to me that summer. It only let me down on cloudy days.