Geshe Sopa offers insightful commentary on two of the earliest Tibetan texts that focus on mental training. Peacock in the Posion Grove presents powerful yogic methods of dispelling the selfish delusions of the ego, and maintaining the purity of our motives. Geshe Sopa’s lucid explanations teach how we can fight the egocentric enemy within by realizing the truth of emptiness, and by developing a compassionate, loving attitude toward others. Sweet & Zwilling’s historical and thematic introduction is a model of textual detective-work and lucid contextualization, which helps us understand the world in which these poems arose and why they continue to speak to us today.