Twenty years after writing Rough Stone Rolling, Richard Bushman says his biography of Joseph Smith met a pressing need and still largely stands, though he would now give far more space to plural marriage, especially Sarah Ann Whitney. He recalls the book’s unexpected reception, marvels at Joseph’s reinvisioning of heaven and reinstatement of temple worship, and concedes he missed later allegations like attempted murder. In this interview, Richard Bushman looks back on Rough Stone Rolling, now seeing Joseph as even more inventive than he thought—and more revolutionary than we recognize.