For two generations Rabbi Soloveitchik exemplified an existential approach to Jewish though and a mastery of the arcana and profundities of Jewish law and philosophy that are seldom matched. His essays, The Lonely Man of Faith and Halakhic Man have provided the modern Jew with an understanding of man's place in the world and in religion, which have defined the parameters of modern Orthodox thought. In this compelling analysis of his thought, Zvi Kolitz examines the existential strains in Rabbi Soloveitchik's religious and philosophical system. Thus, Kolitz stresses man's dual task of shaping Creation and thereby shaping himself. His purpose in the world corresponds to deeply felt needs within himself.