The Tarot cards must be considered (1) as separate and complete hieroglyphs, each representing a distinct principle, law, power, or element in Nature; (2) in relation to each other as the effect of one agent operating upon another; and (3) as vowels and consonants of a philosophic alphabet. The laws governing all phenomena are represented by the symbols upon the Tarot cards, whose numerical values are equal to the numerical equivalents of the phenomena. As every structure consists of certain elemental parts, so the Tarot cards represent the components of the structure of philosophy. Irrespective of the science or philosophy with which the student is working, the Tarot cards can be identified with the essential constituents of his subject, each card thus being related to a specific part according to mathematical and philosophical laws. "An imprisoned person," writes Eliphas Levi, "with no other book than the Tarot, if he knew how to use it, could in a few years acquire universal knowledge, and would be able to speak on all subjects with unequalled learning and inexhaustible eloquence. " (See Transcendental Magic.)