Mark Helprin's powerful, rapturous new novel is set in a present-day Paris caught between violent unrest and its well-known, inescapable glories. Seventy-four-year-old Jules Lacour--a ma tre at Paris-Sorbonne, cellist, widower, veteran of the war in Algeria, and child of the Holocaust--must find a balance between his strong obligations to the past and the attractions and beauties of life and love in the present. In the midst of what should be an effulgent...