The Heart of Understanding Author:Thich Nhat Hanh The Heart of the Prajaparamita Sutra is regarded as the essence of Buddhist teaching. It is recited daily in Mahayana temples and practice centers throughout the world. This cassette, The Heart of Understanding is a recording of Thich Nhat Hanh's lecture on the Heart Sutra at the Green Gulch Zen Center in Muir Beach, California on April 1... more »9, 1987.« less