The Mind and Its World 4 sourcebook presents the path and result of foundational Buddhism as found in the Vaibhāṣika and Sautrāntika philosophical traditions, based on The Gateway that Reveals the Philosophical Traditions to Fresh Minds root text. Talks by Dzogchen Ponlop Rinpoche, Acharya Kelsang Wangdi, Acharya Sherab Gyaltsen, and Professor Phil Stanley bring clarity to the subjects discussed in the root text. Key topics include the meaning of the path, the four applications of mindfulness, personal identitylessness, dependent origination, the four realities of the noble ones, the thirty-seven branches of enlightenment, and the results of the path. Numerous charts and diagrams are included as aids to understanding the material.