"Treasury of the True Dharma Eye" is a comprehensive English translation of the seminal collection of Zen teachings compiled by the 13th-century Japanese monk Eihei Dogen, known as the Shobo Genzo. This extensive work, translated and edited by Kazuaki Tanahashi, offers a profound exploration of Zen Buddhist philosophy and practice. It covers a wide range of topics through Dogen's essays, including the nature of reality, the practice of meditation, and the study of the Buddha's teachings. The translation aims to make these complex teachings accessible to a modern audience, preserving the depth and poetic nature of Dogen's original texts while providing insightful commentary and context.