“The Kabbalah is divided into three categories, the theoretical, the meditative, and the magical. The theoretical Kabbalah, which in its present form is based largely on the Zohar, is concerned mostly with the dynamics of the spiritual domain, especially the worlds of the Sefirot, souls and angels.
The third category of Kabbalah–the magical–is closely related to the meditative. It consists of various signs, incantations and divine names, through which one can influence or alter natural events. Many of the techniques closely resemble meditative methods, and their success may depend on their ability to induce mental states where telekinetic or spiritual power can effectively be channeled. As with the second category, the most important texts have never been printed.”
~Aryeh Kaplan: Sefer Yetzirah: The Book of Creation