In addition to these, there are also other Prajñāpāramitā sūtras such as the "Heart Sutra" ("Prajñāpāramitā Hṛdaya"), which exists in a shorter and longer versions. Regarding the shorter texts, Edward Conze writes, "Two of these, the "Diamond Sūtra" and the "Heart Sūtra" are in a class by themselves and deservedly renowned throughout the world of Northern Buddhism. Both have been translated into many languages and have often been commented upon.". Some scholars consider the Diamond Sutra to be much earlier than Conze does. Scholar Jan Nattier argues the Heart Sutra to be an apocryphal text composed in China from extracts of the Pañcaviṃśatisāhasrikā and other texts ca 7th century. Red Pine, however, does not support Nattiers argument and believes the Prajnaparamita Hridaya Sutra to be of Indian origin.