The Book of Zohar is an age-old source of wisdom and the basis of much of Kabbalistic literature. Throughout the centuries it was the primary and often the only book used by Kabbalists and now it is accessible to contemporary man. Written in a unique and metaphorical language, the book enriches our understanding of reality and substantially widens our worldview thus making fundamentals of the structure of creation more approachable and real. The Book of Zohar has been considered to be the foundation of all. In it can be found principles voiced by Kabbalists of ages ago which are only now being tentatively embraced by modern science. It deals with issues such as the mutual dependency and penetration between the one who attains and what is attained; principles underlying the Universe; and human as micro-world/world as macro world. The life bearing tone of these texts and their positive influence on a reader are simply amazing. These and many other miraculous qualities of the book help even the first time reader to realize why the author gave it such a name: the book of Zohar, "The Book of Radiance".