The formula that can be used to illustrate this Threefold Track is affirmation, negation, and double negation, i.e., one, not one, and neither one nor not one, which reveals the relation of neither vertical nor horizontal among these Three Tracks. In other words, the relation among them is interconnected, and cannot be defined in fix terms. Being together, the Threefold Track forms a merged unity; being separate, each of them exhibits its own function. It is “one” because all dharmas are embraced by the True Reality (dharmata). It is “not one” because the state of Buddhahood is both quiescent and luminous. It is “neither one nor not one” because the tathāgatagarbha as one reality contains immeasurable practices and dharma-doors. Chih-i cites the wish-granting gem as an example depicting the Threefold Track as being one entity while remaining distinctive. Treasure and light are distinguished from the gem, whereby the three of them indicate different aspects, and yet, treasure and light are not different from the gem, owing to the fact that the former are derived from the latter. Apparently, the treasure and light depict the Track of the Illumination of Wisdom and the Track of Accomplishment respectively and are the function of the gem; and the gem depicts the Track of Real Nature and is the substance of the treasure and light. Thus, Chih-i names the Threefold Track as the inconceivable dharma. (Vol. 2, Page 246)