In one sense, this is an incredibly enjoyable biography that sheds light on the varied achievements and adventures of history's most dynamic creative genius.In another sense, it is among the most frustrating books I have ever read.This frustration stems from a telling fact about the book: out of 33 chapters, one is devoted to Da Vinci's personal life. Perhaps I'm in the great minority that opened this book hoping for a vivid portrait of not only the great artist's works, but also his personality. This was certainly my experience with Isaacson's other biographies. In the little details about Ben Franklin's strange hijinks when sharing an Inn room with John Adams, or elderly Einstein helping children with their math homework, one can begin to form an understanding of how such iconic geniuses actually operated in day to day life.But after more than 500 fascinating pages about Leonardo's paintings, journals, and drawings, the man himself remains as mysterious as ever. Perhaps this was no fault of Walter Isaacson's, and there is simply not enough evidence left behind to put together a detailed portrait of Da Vinci's personal life. However, this doesn't seem to be the case, as he occasionally provides tantalizing fragments from letters and journal entries such as:"The Medici made me and ruined me.""Tell me was anything ever done...tell me....tell me."Isaacson gives such fragments just a couple of sentences of consideration. Throughout the book, personal letters are referred to and quoted, but never in much detail or in the context of other clues about Da Vinci's personality. To be clear, I loved learning more about the paintings and journals. They are among the most fascinating documents ever produced by mankind. But in voluminous biographies, especially those of Isaacson, I've come to hope for more than analysis of well-known achievements. I feel as if the cover itself perhaps misled me. After reading this book, I'm well educated on all the grace and beauty of the man's works, but still entirely ignorant about the pattern of his soul.