‘Mother: In’. The words, inscribed on a thin strip of unpolished wood that hung outside a door of a dull-grey Calcutta building, always sent a rush of joy through the young mind of Rajeev Mookherjee, then a schoolboy, now a businessman in his forties. “Whenever I felt depressed, I visited that house with my parents and somehow miraculously my troubles would disappear,” he recalls, almost echoing the Beatles’ lyrics, “When I find myself in times of trouble/Mother Mary comes to me/Speaking words of wisdom/Let it be.”