From CNS:

Announcing the publication Nov. 21, Rizzoli and the Vatican gave reporters copies of the book’s preface and a portion of its introduction.

In the preface, signed "Joseph Ratzinger — Benedict XVI," the pope wrote that for decades he had noticed a growing scholarly distinction between the "historical Jesus" and the "Christ of faith," a distinction that many Christians now accept as accurate.

But, he wrote, if the human Jesus was totally different from the Jesus depicted in the Gospels and proclaimed by the church, what does it mean to have faith in him?

"I trust the Gospels," the pope wrote.

And while he said he relied on modern scholarly biblical criticism and historical research, "I wanted to attempt to present the Jesus of the Gospels as the true Jesus, as the ‘historic Jesus’ in the true sense of the expression."

"Only if something extraordinary happened, if the figure and words of Jesus radically exceeded all the hopes and expectations of his age, can his crucifixion and his effectiveness be explained," the pope wrote.

Pope Benedict explained that he began the book during his 2003 summer vacation, giving the final form to the first four chapters in the summer of 2004.

"After my election to the episcopal see of Rome, I used all of my free moments to work on it," he wrote. "Because I do not know how much time and how much strength I will still be given, I have decided to publish the first 10 chapters" as Volume One of "Jesus of Nazareth."

In a Nov. 21 statement, Jesuit Father Federico Lombardi, director of the Vatican press office, said, "The pope says clearly, with his usual simplicity and humility, that this is not a ‘magisterial act,’ but a fruit of his personal research and, as such, can be freely discussed and critiqued.

"It is not a long encyclical on Jesus, but a personal presentation of the figure of Jesus by the theologian Joseph Ratzinger," who was elected pope after beginning the work, Father Lombardi said.

The Vatican Radio report.