Ra describes meditation as a foundational prerequisite of the path of the spiritual seeker, for without such a method of reversing the analytical process, one could not integrate into unity the many understandings gained in such seeking. They would not endorse a best way to meditate, but described broad categories: The passive meditation involving the clearing of the mind and emptying of the mental jumble which is characteristic of the human mind complex. This is efficacious for those whose goal is to achieve an inner silence as a base from which to listen to the Creator. It is by far the most generally useful type of meditation as opposed to contemplation or prayer. Contemplation or the consideration in a meditative state of an inspiring image, text, or spiritual principle. The faculty of will called praying. Whether it is indeed an helpful activity depends quite totally upon the intentions and objects of the one who prays. The type of meditation which may be called visualization is the tool of the adept. When the ability to hold visual images in mind has become crystallized in an adept, the adept may then, without external action, do polarizing in consciousness which can affect the planetary consciousness. Only those wishing to pursue the conscious raising of planetary vibration will find visualization to be a particularly satisfying type of meditation.