The Three Levels of Theoretical Knowledge, Comprehension, and Realization

Merely knowing that the five aggregates are produced by the eighth consciousness is a foundational theoretical understanding within Mahayana doctrine, representing the very beginning of the Mahayana path. It remains distant from actual realization, and the extent of that distance varies from person to person. At the moment of realization, one must be able to observe precisely where the eighth consciousness functions and what functions it performs. If it is merely theoretical understanding, it remains completely unrelated to the matter of life and death. Some consider this intellectual comprehension, but in truth, it is not even that. Knowing that all dharmas are functions of the eighth consciousness is still a somewhat superficial understanding. Constantly repeating this is merely lip service; it is not necessarily particularly useful for actual realization. However, this is the foundation of Buddhist practice. Based on this understanding, one will gradually integrate into the eighth consciousness.