Prajna Paramita Hridaya Sutra

The phrase "form is emptiness; emptiness is form" is perhaps the most celebrated paradox associated with Buddhist philosophy. It is the supreme mantra. The expression originates from the Prajna Paramita Hridaya Sutra, commonly known as the Heart Sutra, which contains the philosophical essence of about six hundred scrolls making up the Maha Prajna Paramita. The Heart Sutra is the shortest text in this collection. It belongs to the oldest Mahayana texts and presumably originated in India around the time of Jesus Christ.