In this last part of elaborating the subtlety of the Origin, Chih-i discusses it from the perspective of contemplating mind. Mind contemplation is his endeavor to show a practical way of attaining the Ultimate Truth (e.g. subtlety of the Origin). This is based on the idea that the Buddha and living beings are not different. Both the Buddha and living beings possess the Buddha-nature as suchness, and therefore, all living beings are able to emulate the Buddha, from which their Buddha-nature can be revealed and Buddhahood can be attained. Chih-i argues that since contemplating mind is the means that enables the Buddha to attain Buddhahood, all living beings are also able to attain Buddhahood by the same means. Despite the Origin being long and far, by means of contemplating mind, the subtlety of the Origin can be penetrated, as it is not apart from one’s mind. Likewise, although the function of the Traces is vast and great, and cannot be expressed and explained, given the fact that every being’s Buddha-nature is the same as that of the Buddha, great benefit can be generated by means of contemplating mind. (Vol. 2, Page 331)