In the tradition of Tuesdays with Morrie and The Last Lecture, New York Times bestselling author Sara Davidson met every Friday with 89-year-old Rabbi Zalman Shachter-Shalomi, the iconic founder of the Jewish Renewal movment, to discuss what he calls The December Project. "When you can feel in your cells that you're coming to the end of your tour of duty," he said, "what is the spiritual work of this time, and how do we prepare for the mystery?" Davidson,...