Letters of Light is a translation of over ninety passages from a well-known Hasidic text, Maor va-shemesh, consisting of homilies of Kalonymus Kalman Epstein of Krakow, together with a running commentary and analysis by Aryeh Wineman. With remarkable creativity, the Krakow preacher recast biblical episodes and texts through the prism both of the pietistic values of Hasidism, with its accent on the inner life and the Divine innerness of all existence, and of his ongoing wrestling with questions of the primacy of the individual vis-a-vis that of the community. The commentary traces the route...