Some four hundred years before Albert Einstein proposed his theory of relativity of the outer universe to the scientific community, a rabbi named Isaac Luria (1534-1572) passed his theory of the inner universe and its evolution to his students. With vision given only to the most gifted of kabbalistic mystics, Luria explained the inner worlds of the spirit and of the evolution that led to the ultimate birth of our cosmos. In a selection of passages from Luria's Kabbalah that is both universal and stand-alone in transcendental value, Professor James Dunn presents, for the very first time, the essence of the great rabbi's teachings. According to Luria, the ultimate calling in this lifetime or in future lifetimes is to reharmonize (and hence remove) inherent imperfections through proper heart, and the teachings presented here have just this aim: to help ""heal the broken vessel of the world"" (tikkun olam). We all long to be healed and whole, and here scholars and lay people alike will find the wisdom they seek.