About 20 years ago, I read an older translation of this biography. Then, as now, a reader cannot help but be impressed by the thorough and meticulous scholarship that went into its preparation. Because of its size and scope (900+ pages), it may be somewhat daunting to new readers who may be just now encountering Bonhoeffer. However, given the nature of his literary output (Bonheoffer was still a young man when he died, and many of his ideas exist only in limited or underdeveloped forms), this in-depth look at the man and his motivations by the individual who probably knew him best is essential to an informed understanding of his work. For Bonhoeffer admirers, it doesn't get any better than this.