There are some books you don’t just read — you inhabit them. They unfold like an old photograph album, where every page carries a scent, a story, a heartbeat. I Came Upon a Lighthouse by Shantanu Naidu, with illustrations by Sanjana Desai, is one such book. It’s not a biography, not exactly a memoir, but a feeling — warm, humane, and quietly luminous — much like the man at its center: Ratan Tata.   I still remember the first time I turned its pages on a quiet Sunday morning,