 Like other Buddhist schools, the theory of the two truths captures the central Yogācāra doctrines. Maitreyanāth asserts in his Verses on the Distinction Between Phenomena and Reality (Dharmadharmatāvibhaṅga-kārikā, DDVK; Sems tsam phi 50b–53b)—“All this is understood to be condensed in two categories: phenomena (dharma) and reality (dharmatā) because they encompass all.” (DDVK 2, Sems tsam phi) By “All” Yogācārin means every possible object of knowledge, and they are said to be contained in the two truths since objects are either conventional truth or ultimate truth. Things are either objects of conventional knowledge or objects of ultimate knowledge, and a third category is not admitted.