This book constitutes Tson-kha-pas reform of Tibetan non-tantric Buddhist meditation and its philosophical position. The intial section, 'Calming the Mind', is a treatise on meditation, following the Buddhist teachings of Asanga. 'Discerning the Real' deals with philosophy, and exhibits the influence of the Buddhist scholar Nagarjuna and his successors. Both sections cover matters that are still controversial in Tibet, and remain of prevalent interest to modern scholars.