Jamgön Kongtrul’s Treasury of Knowledge in ten books is a unique encyclopedic masterpiece embodying the entire range of Buddhist teachings as they were preserved in Tibet. The first two parts of Book Six concern Indo-Tibetan Classical Learning and Buddhist Phenomenology. The former analyzes traditional subjects such as Sanskrit grammar, logic, and medicine. The principal non-Buddhist philosophical systems in vogue are then summarized and contrasted with the hierarchical meditative concentrations and formless absorptions through which the “summit of cyclic existence” can genuinely be attained. Part Two examines the phenomenological structures of Abhidharma—the shared inheritance of all Buddhist traditions.