The Ocean of Definitive Meaning of the Ninth Karmapa (1556–1603) is the most profound and famous text on Mahamudra ever written, and it holds crucial significance in the vibrant Kagyu tradition. It offers a detailed, uniquely comprehensive presentation of instructions for both the view and the practice. In the teachings contained in this book, Thrangu Rinpoche has distilled the essence of the extensive text of the Ninth Karmapa into manageable proportions and provided targeted guidance for implementing his teachings. According to Thrangu Rinpoche, the Mahamudra practice is particularly suitable for Westerners and contemporary practitioners, as it can be realized within the context of nearly any lifestyle. Mahamudra dissolves the artificial separation between phenomena and emptiness, revealing the radiant display of the mind. The text of the Ninth Karmapa was traditionally accessible only to advanced students. However, Khenchen Thrangu Rinpoche has kindly agreed to the publication of these central teachings from the text, which he presented during a retreat he led in 2001 in the mountains of British Columbia for 140 Western students. His engaging presentation offers teachers and students a systematic approach to some of the highest practices in the Kagyu tradition. Thrangu Rinpoche's exceptional wisdom and insight make this new commentary an unparalleled gem in the canon of spiritual literature.