The "concept" of the One is not, properly speaking, a concept at all, since it is never explicitly defined by Plotinus, yet it is nevertheless the foundation and grandest expression of his philosophy. Plotinus does make it clear that no words can do justice to the power of the One; even the name, "the One," is inadequate, for naming already implies discursive knowledge, and since discursive knowledge divides or separates its objects in order to make them intelligible, the One cannot be known through the process of discursive reasoning (Ennead VI.9.4). Knowledge of the One is achieved through the experience of its "power" (dunamis) and its nature, which is to provide a "foundation" (arkhe) and location (topos) for all existents (VI.9.6). The "power" of the One is not a power in the sense of physical or even mental action; the power of the One, as Plotinus speaks of it, is to be understood as the only adequate description of the "manifestation" of a supreme principle that, by its very nature, transcends all predication and discursive understanding.