 The first work devoted entirely to argument and inference is the Fāng biàn xīn lùn (方便心論), or Treatise on the heart of means, translated into Chinese in 472 ce without attribution, though it later came to be attributed to Nāgārjuna. This text, translated into Sanskrit by G. Tucci (1929), is commonly known by scholars by the translation of its title by Tucci as Upāya-hṛdaya.