Halakhic Man

Halakhic Man is the classic work of modern Jewish and religious thought by the twentieth centuryAEs preeminent Orthodox Jewish theologian and talmudic scholar. It is a profound excursion into religious psychology and phenomenology, a pioneering attempt at a philosophy of halakhah, and a stringent critique of mysticism and romantic religion.
Review:
The best single introduction to Jewish religious thought in print. -Theology Today