Composed at the request of His Holiness the Dalai Lama, this translation with commentary on key parts of Khedrup Jé's Clearing Mental Darkness: An Ornament of Dharmakirti's "Seven Treatises on Valid Cognition" is intended for all levels of understanding. You'll learn how a mind realizes its object, which types of consciousness realize their objects, and when a consciousness is considered to be valid in the sense of realizing its object. Having explained valid cognizers, or direct perceivers, which are essential to understanding the four noble truths, Khedrup Jé goes on to brilliantly elucidate this essential teaching of the Buddha and offers a lucid presentation of how to progress on the spiritual paths of liberation and enlightenment, including how to generate yogic perception directly realizing selflessness. With this, one develops an unmistaken realization of the fundamental reality of selflessness of persons and phenomena, which eliminates ignorance, the root cause of all mental afflictions and samsaric suffering.