Book excerpt: adhu Sundar Singh was a well-known Christian mystic in India during the early 20th century. He walked from place to place preaching the gospel and lived without possessions. He had many dreams and visions. He suffered much from poverty and persecution, but won many converts. He eventually traveled the world preaching and teaching and wrote several books. This biography was written after many interviews with Sundar, a few years before he disappeared in Tibet.