Acknowledged as one of the greatest of the western mystics, Jacob Boehme was born in 1575 at Old Seidenberg, a small village in Silesia. A shoemaker by trade, Boehme's whole life was spent in contemplation and prayer, seeking spiritual enlightenment. He was rewarded with piercing visions of God and the nature of reality, revelations which he set down in a series of books. The Clavis is perhaps the most accessible of all these tomes, a detailed,...