Heart Sutra (Prajnaparamita Hridaya Sutra) The Heart Sutra is a brief but profound Mahayana Buddhist text, central to the Prajnaparamita teachings, which emphasize the perfection of wisdom. It focuses on the concept of emptiness, stating that form and emptiness are interdependent. The sutra is recited widely for meditation and deep reflection on the nature of reality. Central theme: Emptiness (Śūnyatā) Declares that all phenomena are empty of inherent existence Key phrase: "Form is emptiness, emptiness is form" Dialogue between Avalokiteshvara and Sariputra Highlights the path to transcend suffering through wisdom Diamond Sutra (Vajracchedika Prajnaparamita Sutra) The Diamond Sutra is an influential Mahayana text that discusses the nature of reality and perception. It focuses on breaking attachments to form and concepts, particularly emphasizing non-attachment to self, phenomena, or the Dharma itself. The text offers guidance on attaining enlightenment through wisdom beyond duality. Key concept: Detachment from forms and ideas Emphasizes the illusory nature of reality Encourages non-attachment even to spiritual teachings Known for its paradoxical statements Popular in Zen and Chan Buddhist practice