We have no reason to think that the writing of biographies about the Prophet will cease as we enter the twenty-first century. Major historical figures always invite reassessment and interest in Joseph Smith shows no signs of flagging. The relentless growth of the Church makes him more important now than ever. To account for Mormonism's modern success the mysteries of Joseph Smith have to be plumbed. How are we to understand this extravagant and bold figure whose work has now attracted millions of followers all over the world? How can Joseph be situated in American culture and now in global culture? Why was he so successful? Puzzles such as these are sure to attract biographers in the coming century. Mormon authors should contribute to this speculation as it goes forward rather than leaving the question of significance to outsiders and critics.