Paths and Grounds of Guhysamaja according to Arya Nagarjuna is a very significant eighteenth century Tibetan treatise (with brief contemporary) which maps out the paths and the grounds of Guhyasamaja Tantra according to Arya Nagarjuna's tradition. It is based on the incomparable masterpieces of Manjushri, Lama Tsongkhapa and his hear-like disciples. In many Buddhist Tantras and works of realised masters Guhyasamaja is refered to as 'the supreme and king of all Tantras'. Acharya Chandrakirti's Bright Lamp (sgron gsal) states, "This (Guhyasamaja) is the supreme subsidiary practice; a compendium of the meaning of all Tantras". Khedrup Rinpoche in his Short Writing (Yig chung) states, "....Moreover, if one initially understands Ghuyasamaja one will automatically understand other (Tantras) ". His Holiness the Fourteenth Dalai Lama has also stated that the Guhyasamaja provides structure to other Highest Yoga Tantras; it, therefore, makes it easier to understand other Tantras of the same class. In short this work is an indispensable guide for initiated Buddhist tantric practitioners especially those of Guhyasamaja.