Chaim Potok is one terrific storyteller. He tells big stories,of peoples,microcosemed in the stories of familes,mostly boys and men{though in Davita's harp, he steps outside,with interesting results}Th Book of lights is essentially the story of two friends, Gershon and Arthur.Gershon,alone attempts to understand the darkness swallowing the earth by studying kabbalah, the book of Jewish Mysticism. His friend is haunted by dreams of light, the brightest light men have yet discovered. Gershon becomes a chaplain in Korea,and contineus his journey. Arthur is haunted by the atomic bombs dropped on Hiroshima and especially Nagasaki.The title of the book is of course bouble edged, the book of lights and the balst of atomic weapons. There is little sermonising here. mr. Potok, as aleways, has kept to his storytelling genius. The debates among the rabbis at the Jewish Theological Seminary about the role of Kabbalh are very inereesting, and Loran's mystical encounter on a Brooklyn rooftop are moments of sheer poetry. This is a big book, rich, filled with ideas. In many ways, it is Mr Potoks most ambitious work of fiction. And very, very rewarding.