Buddhist texts
Buddhist texts are those religious texts which belong to the Buddhist tradition. The earliest Buddhist texts were not committed to writing until some centuries after the death of Gautama Buddha. The oldest surviving Buddhist manuscripts are the Gandhāran Buddhist texts, found in Afghanistan and written in Gāndhārī, they date from the first century BCE to the third century CE. The first Buddhist texts were initially passed on orally by Buddhist monastics, but were later written down and composed as manuscripts in various Indo-Aryan languages (such as Pāli, Gāndhārī, and Buddhist Hybrid Sanskrit) and collected into various Buddhist  Canons. These were then translated into other languages such as Buddhist Chinese ("fójiào hànyǔ" 佛教漢語) and Classical Tibetan as Buddhism spread outside of India. Buddhist texts can be categorized in a number of ways. The Western terms "scripture" and "canonical" are applied to Buddhism in inconsistent ways by Western scholars: for example, one authority refers to "scriptures and other canonical texts", while another says that scriptures can be categorized into canonical, commentarial, and pseudo-canonical. Buddhist traditions have generally divided these texts with their own categories and divisions, such as that between "buddhavacana" "word of the Buddha," many of which  are known as "sutras", and other texts, such as "shastras" (treatises) or "Abhidharma". These religious texts were written in different languages, methods and writing systems. Memorizing, reciting and copying the texts was seen as spiritually valuable. Even after the development and adoption of printing by Buddhist institutions, Buddhists continued to copy them by hand as a spiritual practice. In an effort to preserve these scriptures, Asian Buddhist institutions were at the forefront of the adoption of Chinese technologies related to bookmaking, including paper, and block printing which were often deployed on a large scale. Because of this, the first surviving  example of a printed text is a Buddhist charm, the first full printed book is the Buddhist Diamond Sutra (c. 868) and the first hand colored print is an illustration of Guanyin dated to 947. Buddhavacana. The concept of "buddhavacana" (word of the Buddha) is important in understanding how Buddhists classify and see their texts. Buddhavacana texts have special status as sacred scripture and are generally seen as in accord with the teachings of the historical Buddha, which is termed "the Dharma". According to Donald Lopez, the criteria for determining what should be considered buddhavacana were developed at an early  stage, and that the early formulations do not suggest that Dharma is limited to what was spoken by the historical Buddha. The Mahāsāṃghika and the Mūlasarvāstivāda considered both the Buddha's discourses and those of his disciples to be "buddhavacana". A number of different beings such as Buddhas, disciples of the Buddha, ṛṣis, and devas were considered capable to transmitting buddhavacana. The content of such a discourse was then to be collated with the sūtras, compared with the Vinaya, and evaluated against the nature of the Dharma. These texts may then be certified as true buddhavacana by a buddha, a  sangha, a small group of elders, or one knowledgeable elder. In Theravāda Buddhism, the standard collection of "buddhavacana" is the Pāli Canon, also known as the "Tripiṭaka" ("three baskets"). Generally speaking, the Theravāda school rejects the Mahāyāna sūtras as "buddhavacana" (word of the Buddha), and do not study or see these texts as reliable sources. In East Asian Buddhism, what is considered "buddhavacana" is collected in the Chinese Buddhist canon; the most common edition of this is the Taishō Tripiṭaka, itself based on the Tripiṭaka Koreana. This collection, unlike the Pāli "Tripiṭaka", contains Mahāyāna sūtras, Śāstras (scholastic treatises), and Esoteric  Buddhist literature. According to Venerable Hsuan Hua from the tradition of Chinese Buddhism, there are five types of beings who may speak the sutras of Buddhism: a Buddha, a disciple of a Buddha, a deva, a ṛṣi, or an emanation of one of these beings; however, they must first receive certification from a buddha that its contents are true Dharma. Then these sutras may be properly regarded as "buddhavacana". Sometimes texts that are considered commentaries by some are regarded by others as "buddhavacana". In Indo-Tibetan Buddhism, what is considered "buddhavacana" is collected in the Kangyur ('The Translation of the  Word'). The East Asian and Tibetan Buddhist Canons always combined "buddhavacana" with other literature in their standard collected editions. However, the general view of what is and is not "buddhavacana" is broadly similar between East Asian Buddhism and Tibetan Buddhism. The Tibetan Kangyur, which belongs to the various schools of Tibetan Vajrayāna Buddhism, in addition to containing sutras and Vinaya, also contains Buddhist tantras and other related Tantric literature. The texts of the early Buddhist schools. Early Buddhist texts. The earliest Buddhist texts were passed down orally in Middle Indo-Aryan languages called Prakrits, including Gāndhārī language, the early Magadhan  language and Pāli through the use of repetition, communal recitation and mnemonic devices. These texts were later compiled into canons and written down in manuscripts. For example, the Pāli Canon was preserved in Sri Lanka where it was first written down in the first century BCE. There are early texts from various Buddhist schools, the largest collections are from the Theravāda and Sarvāstivāda schools, but there are also full texts and fragments from the Dharmaguptaka, Mahāsāṅghika, Mahīśāsaka, Mūlasarvāstivāda, and others. The most widely studied early Buddhist material are the first four Pāli Nikayas, as well as the corresponding Chinese Āgamas . The modern study of early pre-sectarian Buddhism often relies on comparative scholarship using these various early Buddhist sources. Various scholars of Buddhist studies such as Richard Gombrich, Akira Hirakawa, Alexander Wynne, and A. K. Warder hold that early Buddhist texts contain material that could possibly be traced to the historical Buddha himself or at least to the early years of pre-sectarian Buddhism. In Mahāyāna Buddhism, these texts are sometimes referred to as "Hinayana" or "Śrāvakayāna". Although many versions of the texts of the early Buddhist schools exist, the only complete collection of texts to survive in a Middle  Indo-Aryan language is the "Tipiṭaka" (triple basket) of the Theravāda school. The other (parts of) extant versions of the Tripitakas of early schools include the Chinese Āgamas, which includes collections by the Sarvāstivāda and the Dharmaguptaka. The Chinese Buddhist canon contains a complete collection of early sutras in Chinese translation, their content is very similar to the Pali, differing in detail but not in the core doctrinal content. The Tibetan canon contains some of these early texts as well, but not as complete collections. The earliest known Buddhist manuscripts containing early Buddhist texts are the Gandharan Buddhist Texts, dated  to the 1st century BCE and constitute the Buddhist textual tradition of Gandharan Buddhism which was an important link between Indian and East Asian Buddhism. Parts of what is likely to be the canon of the Dharmaguptaka can be found among these Gandharan Buddhist Texts. There are different genres of early Buddhist texts, including prose "suttas" (Sanskrit: "sūtra", discourses), disciplinary works ("Vinaya"), various forms of verse compositions (such as "gāthā" and "udāna"), mixed prose and verse works ("geya"), and also lists ("matika") of monastic rules or doctrinal topics. A large portion of Early Buddhist literature is part of the "sutta  or sutra" genre. The "Sūtras" (Sanskrit; Pāli: "Sutta") are mostly discourses attributed to the Buddha or one of his close disciples. They are considered to be "buddhavacana" by all schools. The Buddha's discourses were perhaps originally organised according to the style in which they were delivered. They were later organized into collections called "Nikāyas" ('volumes') or "Āgamas" ('scriptures'), which were further collected into the "Sūtra Piṭaka" ("Basket of Discourses") of the canons of the early Buddhist schools. Most of the early sutras that have survived are from Sthavira nikaya schools, no complete collection has survived from the other early  branch of Buddhism, the Mahāsāṃghika. However, some individual texts have survived, such as the "Śālistamba Sūtra" (rice stalk sūtra). This "sūtra" contains many parallel passages to the Pali suttas. As noted by N. Ross Reat, this text is in general agreement with the basic doctrines of the early sutras of the Sthavira schools such as dependent origination, the "middle way" between eternalism and annihilationism, the "five aggregates", the "three unwholesome roots", the Four Noble Truths and the Noble Eightfold Path. Another important source for Mahāsāṃghika sutras is the "Mahāvastu" ("Great Event"), which is a collection of various texts compiled into  a biography of the Buddha. Within it can be found quotations and whole sutras, such as the Mahāsāṃghika version of the "Dharmacakrapravartana". The other major type of text aside from the sutras are the Vinayas. Vinaya literature is primarily concerned with aspects of the monastic discipline and the rules and procedures that govern the Buddhist monastic community (sangha). However, Vinaya as a term is also contrasted with Dharma, where the pair (Dhamma-Vinaya) mean something like 'doctrine and discipline'. The Vinaya literature in fact contains a considerable range of texts. There are, of course, those that discuss the monastic rules , how they came about, how they developed, and how they were applied. But the vinaya also contains some doctrinal expositions, ritual and liturgical texts, biographical stories, and some elements of the "Jatakas", or birth stories. Various Vinaya collections survive in full, including those of the following schools: Theravāda (in Pali), Mula-Sarvāstivāda (in Tibetan translation) and the Mahāsānghika, Sarvāstivāda, Mahīshāsika, and Dharmaguptaka (in Chinese translations). In addition, portions survive of a number of Vinayas in various languages. Aside from the Sutras and the Vinayas, some schools also had collections of "minor" or miscellaneous texts. The Theravāda "Khuddaka Nikāya" (‘Minor Collection ’) is one example of such a collection, while there is evidence that the Dharmaguptaka school had a similar collection, known as the "Kṣudraka Āgam"a. Fragments of the Dharmaguptaka minor collection have been found in Gandhari. The Sarvāstivāda school also seems to have had a "Kṣudraka" collection of texts, but they did not see it as an "Āgama". These "minor" collections seem to have been a category for miscellaneous texts, and was perhaps never definitively established among many early Buddhist schools. Early Buddhist texts which appear in such "minor" collections include: Abhidharma texts. Abhidharma (in Pāli, "Abhidhamma") texts which contain "an  abstract and highly technical systematization" of doctrinal material appearing in the Buddhist sutras. It is an attempt to best express the Buddhist view of "ultimate reality" ("paramartha-satya") without using the conventional language and narrative stories found in the sutras. The prominent modern scholar of Abhidharma, Erich Frauwallner has said that these Buddhist systems are "among the major achievements of the classical period of Indian philosophy." Modern scholars generally believe that the canonical Abhidharma texts emerged after the time of the Buddha, in around the 3rd century BCE. Therefore, the canonical Abhidharma works are generally claimed by scholars not to  represent the words of the Buddha himself, but those of later Buddhists. There are different types and historical layers of Abhidharma literature. The early canonical Abhidharma works (like the "Abhidhamma Pitaka") are not philosophical treatises, but mainly summaries and expositions of early doctrinal lists with their accompanying explanations. These texts developed out of early Buddhist lists or matrices ("mātṛkās") of key teachings, such as the 37 factors leading to Awakening. Scholars like Erich Frauwallner have argued that there is an "ancient core" of early pre-sectarian material in the earliest Abhidharma works, such as in the Theravada "Vibhanga", the "Dharmaskandha  of the Sarvastivada, and the Śāriputrābhidharma" of the Dharmaguptaka school. Only two full canonical Abhidharma collections have survived both containing seven texts, the Theravāda Abhidhamma and the Sarvastivada Abhidharma, which survives in Chinese translation. However, texts of other tradition have survived, such as the "Śāriputrābhidharma" of the Dharmaguptaka school, the "Tattvasiddhi Śāstra" ("Chéngshílun") and various Abhidharma type works from the Pudgalavada school. Later post-canonical Abhidharma works were written as either large treatises ("śāstra"), as commentaries ("aṭṭhakathā") or as smaller introductory manuals. They are more developed philosophical works which include many innovations and doctrines not found in the canonical Abhidharma . Other texts. The early Buddhist schools also preserved other types of texts which developed in later periods, which were variously seen as canonical or not, depending on the tradition. One of the largest category of texts that were neither Sutra, Vinaya nor Abhidharma includes various collections of stories such as the Jātaka tales and the Avadānas (Pali: Apadāna). These are moral fables and legends dealing with the previous births of Gautama Buddha in both human and animal form. The different Buddhist schools had their own collections of these tales and often disagreed on which stories were canonical. Another genre that  developed over time in the various early schools were biographies of the Buddha. Buddha biographies include the "Mahāvastu" of the Lokottaravadin school, the northern tradition's "Lalitavistara Sūtra," the Theravada "Nidānakathā" and the Dharmaguptaka "Abhiniṣkramaṇa Sūtra." One of the most famous of biographies is the "Buddhacarita", an epic poem in Classical Sanskrit by Aśvaghoṣa. Aśvaghoṣa also wrote other poems, as well as Sanskrit dramas. Another Sanskrit Buddhist poet was Mātṛceṭa, who composed various pious hymns in slokas. Buddhist poetry is a broad genre with numerous forms and has been composed in many languages, including Sanskrit, Tibetan, Chinese and Japanese. Aside  from the work of Aśvaghoṣa, another important Sanskrit poet was Mātr̥ceṭa, known for his "One Hundred and Fifty Verses." Buddhist poetry was also written in popular Indian languages, such as Tamil and Apabhramsa. One well known poem is the Tamil epic "Manimekalai," which is one of the Five Great Epics of Tamil literature. Other later hagiographical texts include the "Buddhavaṃsa," the "Cariyāpiṭaka" and the "Vimanavatthu" (as well as its Chinese parallel, the "Vimānāvadāna"). There are also some unique individual texts like the "Milinda pañha" (literally "The Questions of Milinda") and its parallel in Chinese, the "Nāgasena Bhikśu Sūtra" (那先比丘經). These  texts depict a dialogue between the monk Nagasena, and the Indo-Greek King Menander (Pali: Milinda). It is a compendium of doctrine, and covers a range of subjects. Theravāda texts. The Theravāda tradition has an extensive commentarial literature, much of which is still untranslated. These are attributed to scholars working in Sri Lanka such as Buddhaghosa (5th century CE) and Dhammapala. There are also sub-commentaries ("ṭīkā") or commentaries on the commentaries. Buddhaghosa was also the author of the "Visuddhimagga", or "Path of Purification", which is a manual of doctrine and practice according to the Mahavihara tradition of Sri Lanka . According to Nanamoli Bhikkhu, this text is regarded as "the principal non-canonical authority of the Theravada." A similar albeit shorter work is the "Vimuttimagga". Another highly influential Pali Theravada work is the "Abhidhammattha-sangaha" (11th or 12th century), a short 50 page introductory summary to the Abhidhamma, which is widely used to teach Abhidhamma. Buddhaghosa is known to have worked from Buddhist commentaries in the Sri Lankan Sinhala language, which are now lost. Sri Lankan literature in the vernacular contains many Buddhist works, including as classical Sinhala poems such as the "Muvadevāvata" (The Story of the Bodhisattva's Birth  as King Mukhadeva, 12th century) and the "Sasadāvata" (The Story of the Bodhisattva's Birth as a Hare, 12th century) as well as prose works like the "Dhampiyātuvā gätapadaya" (Commentary on the Blessed Doctrine), a commentary on words and phrases in the Pāli Dhammapada. The Theravāda textual tradition spread into Burma and Thailand where Pali scholarship continued to flourish with such works as the "Aggavamsa" of Saddaniti and the "Jinakalamali" of Ratanapañña. Pali literature continued to be composed into the modern era, especially in Burma, and writers such as Mahasi Sayadaw translated some of their texts into Pali. There are  also numerous Esoteric Theravada texts, mostly from Southeast Asia. This tradition flourished in Cambodia and Thailand before the 19th century reformist movement of Rama IV. One of these texts has been published in English by the Pali Text Society as "Manual of a Mystic". Burmese Buddhist literature developed unique poetic forms form the 1450s onwards, a major type of poetry is the which are long and embellished translations of Pali Buddhist works, mainly jatakas. A famous example of poetry is the (the in nine sections, 1523). There is also a genre of Burmese commentaries or which were used to teach  Pali. The nineteenth century saw a flowering of Burmese Buddhist literature in various genres including religious biography, Abhidharma, legal literature and meditation literature. An influential text of Thai literature is the "Three Worlds According to King Ruang" (1345) by Phya Lithai, which is an extensive Cosmological and visionary survey of the Thai Buddhist universe. Mahāyāna texts. Mahāyāna sūtras. "See Mahāyāna sūtras for historical background and a list of some sutras categorised by source." Around the beginning of the common era, a new genre of sutra literature began to be written with a focus on the Bodhisattva ideal, commonly known as  Mahāyāna ("Great Vehicle") or "Bodhisattvayāna" ("Bodhisattva Vehicle"). The earliest of these sutras do not call themselves ‘Mahāyāna,’ but use the terms "Vaipulya" (extensive, expansive) sutras, or "Gambhira" (deep, profound) sutras. There are various theories of how Mahāyāna emerged. According to David Drewes, it seems to have been "primarily a textual movement, focused on the revelation, preaching, and dissemination of Mahāyāna sutras, that developed within, and never really departed from, traditional Buddhist social and institutional structures." Early "dharmabhanakas" (preachers, reciters of these sutras) were influential figures, and promoted these new texts throughout the Buddhist communities. Many of these Mahāyāna sūtras were  written in Sanskrit (in hybrid forms and in classical Sanskrit) and then later translated into the Tibetan and Chinese Buddhist canons (the Kangyur and the Taishō Tripiṭaka respectively) which then developed their own textual histories. Sanskrit had been adopted by Buddhists in north India during the Kushan era and Sanskrit Buddhist literature became the dominant tradition in Buddhist India until the decline of Buddhism there. Mahāyāna sūtras are also generally regarded by the Mahāyāna tradition as being more profound than the śrāvaka texts as well as generating more spiritual merit and benefit. Thus, they are seen as superior and more  virtuous to non-Mahāyāna sutras. The Mahāyāna sūtras are traditionally considered by Mahāyāna Buddhists to be the word of the Buddha. Mahāyāna Buddhists explained the emergence of these new texts by arguing that they had been transmitted in secret, via lineages of supernatural beings (such as the nagas) until people were ready to hear them, or by stating that they had been revealed directly through visions and meditative experiences to a select few. According to David McMahan, the literary style of the Mahāyāna sūtras reveals how these texts were mainly composed as written works and how they also needed to  legitimate themselves to other Buddhists. They used different literary and narrative ways to defend the legitimacy of these texts as Buddha word. Mahāyāna sūtras such as the "Gaṇḍavyūha" also often criticize early Buddhist figures, such as Sariputra for lacking knowledge and goodness, and thus, these elders or śrāvaka are seen as not intelligent enough to receive the Mahāyāna teachings, while more the advanced elite, the bodhisattvas, are depicted as those who can see the highest teachings. These sūtras were not recognized as being Buddha word by various early Buddhist schools and there was lively debate over their authenticity throughout the  Buddhist world. Various Mahāyāna sūtras warn against the charge that they are not word of the Buddha, showing that they are aware of this claim. Buddhist communities such as the Mahāsāṃghika school were divided along these doctrinal lines into sub-schools which accepted or did not accept these texts. The Theravāda school of Sri Lanka also was split on the issue during the medieval period. The Mahavihara sub-sect rejected these texts and the (now extinct) Abhayagiri sect accepted them. Theravāda commentaries mention these texts (which they call "Vedalla/Vetulla") as not being the Buddha word and being counterfeit scriptures . Modern Theravāda generally does not accept these texts as "buddhavacana" (word of the Buddha). The Mahāyāna movement remained quite small until the fifth century, with very few manuscripts having been found before then (the exceptions are from Bamiyan). However, according to Walser, the fifth and sixth centuries saw a great increase in the production of these texts. By this time, Chinese pilgrims, such as Faxian, Yijing, and Xuanzang were traveling to India, and their writings do describe monasteries which they label 'Mahāyāna' as well as monasteries where both Mahāyāna monks and non-Mahāyāna monks lived together. Mahāyāna sūtras contain several  elements besides the promotion of the bodhisattva ideal, including "expanded cosmologies and mythical histories, ideas of purelands and great, ‘celestial’ Buddhas and bodhisattvas, descriptions of powerful new religious practices, new ideas on the nature of the Buddha, and a range of new philosophical perspectives." These texts present stories of revelation in which the Buddha teaches Mahāyāna sutras to certain bodhisattvas who vow to teach and spread these sutras. These texts also promoted new religious practices that were supposed to make Buddhahood easy to achieve, such as "hearing the names of certain Buddhas or bodhisattvas, maintaining Buddhist precepts, and listening to , memorizing, and copying sutras." Some Mahāyāna sūtras claim that these practices lead to rebirth in Pure lands such as Abhirati and Sukhavati, where becoming a Buddha is much easier to achieve. Several Mahāyāna sūtras also depict important Buddhas or Bodhisattvas not found in earlier texts, such as the Buddhas Amitabha, Akshobhya and Vairocana, and the bodhisattvas Maitreya, Mañjusri, Ksitigarbha, and Avalokiteshvara. An important feature of Mahāyāna is the way that it understands the nature of Buddhahood. Mahāyāna texts see Buddhas (and to a lesser extent, certain bodhisattvas as well) as transcendental or supramundane ("lokuttara") beings, who live for eons constantly  helping others through their activity. According to Paul Williams, in Mahāyāna, a Buddha is often seen as "a spiritual king, relating to and caring for the world", rather than simply a teacher who after his death "has completely ‘gone beyond’ the world and its cares". Buddha Sakyamuni's life and death on earth is then usually understood as a "mere appearance", his death is an unreal show, in reality he continues to live in a transcendent reality. Thus the Buddha in the Lotus sutra says that he is "the father of the world", "the self existent ("svayambhu")...protector of all  creatures", who has "never ceased to exist" and only "pretends to have passed away." Hundreds of Mahāyāna sūtras have survived in Sanskrit, Chinese and Tibetan translation. There many different genres or classes of Mahāyāna sutras, such as the "Prajñāpāramitā sūtra"s, the "Tathāgatagarbha sūtras" and the Pure Land "sūtra"s. The different Mahāyāna schools have many varied classification schemas for organizing them and they see different texts as having higher authority than others. Some Mahāyāna sūtras are also thought to display a distinctly tantric character, like some of the shorter Perfection of Wisdom sutras and the "Mahavairocana Sutra". At least some editions  of the Kangyur include the "Heart Sutra" in the tantra division. Such overlap is not confined to "neighbouring" yanas: at least nine "Sravakayana" texts can be found in the tantra divisions of some editions of the Kangyur. One of them, the "Atanatiya Sutra", is also included in the Mikkyo (esoteric) division of the standard modern collected edition of Sino-Japanese Buddhist literature. Some Mahāyāna texts also contain "dhāraṇī," which are chants that are believed to have magical and spiritual power. Major Mahāyāna sūtras. The following is a list of some well known Mahāyāna sutras which have been studied by modern  scholarship: Indian treatises. The Mahāyāna commentarial and exegetical literature is vast. Many of these exegetical and scholastic works are called "Śāstras", which can refer to a scholastic treatise, exposition or commentary. Central to much of Mahāyāna philosophy are the works of the Indian scholar Nagarjuna. Especially important is his magnum opus, the "Mūlamadhyamika-karikā", or Root Verses on the Middle Way, a seminal text on the Madhyamika philosophy. Various other authors of the Madhyamaka school followed him and wrote commentaries to his texts or their own treatises. Another very influential work which traditionally attributed to Nagarjuna In East Asia is  the "Dà zhìdù lùn" (*"Mahāprajñāpāramitopadeśa, The Great Discourse on Prajñāpāramitā"). This is a massive Mahayana Buddhist treatise and commentary on the "Prajñāpāramitā sutra" in Twenty-five Thousand Lines, and it has been extremely important in the development of the major Chinese Buddhist traditions. Its authorship to Nagarjuna however has been questioned by modern scholars and it only survives in the Chinese translation by Kumārajīva (344–413 CE). The "Yogācārabhūmi-Śāstra" (fourth century CE) is another very large treatise which focuses on yogic praxis and the doctrines of the Indian Yogacara school. Unlike the "Dà zhìdù lùn", it was studied and transmitted  in both the East Asian Buddhist and the Tibetan Buddhist traditions. The works of Asanga, a great scholar and systematizer of the Yogacara, are also very influential in both traditions, including his magnum opus, the "Mahāyāna-samgraha", and the "Abhidharma-samuccaya" (a compendium of Abhidharma thought that became the standard text for many Mahayana schools especially in Tibet). Various texts are also said to have received by Asanga from the Bodhisattva Maitreya in the Tushita god realm, including works such as "Madhyāntavibhāga", the "Mahāyāna-sūtrālamkāra", and the "Abhisamayālamkara". Their authorship remains disputed by modern scholars however. Asanga's brother Vasubandhu  wrote a large number of texts associated with the Yogacara including: "Trisvabhāva-nirdesa", "Vimsatika", "Trimsika", and the "Abhidharmakośa-bhāsya". Numerous commentaries were written by later Yogacara exegetes on the works of these two brothers. The 9th Century Indian Buddhist Shantideva produced two texts: the "Bodhicaryāvatāra" has been a strong influence in many schools of the Mahayana. It is notably a favorite text of the 14th Dalai Lama. Dignāga is associated with a school of Buddhist logic that tried to establish which texts were valid sources of knowledge (see also Epistemology). He produced the "Pramāna-samuccaya", and later Dharmakirti wrote the  Pramāna-vārttikā, which was a commentary and reworking of the Dignaga text. East Asian works. "The Awakening of Faith in the Mahayana" ("Dàshéng Qǐxìn Lùn") is an influential text in East Asian Buddhism, especially in the Hua-yen school of China, and its Japanese equivalent, Kegon. While it is traditionally attributed to Ashvaghosha, most scholars now hold it is a Chinese composition. The "Dhyāna sutras" (Chan-jing) are a group of early Buddhist meditation texts which contain meditation teachings from the Sarvastivada school along with some early proto-Mahayana meditations. They were mostly the work of Buddhist Yoga teachers from  Kashmir and were translated into Chinese early on. The early period of the development of Chinese Buddhism was concerned with the collection and translation of texts into Chinese and the creation of the Chinese Buddhist canon. This was often done by traveling overland to India, as recorded in the Great Tang Records on the Western Regions, by the monk Xuanzang (c. 602–664), who also wrote a commentary on Yogacara which remained influential, the "Discourse on the Perfection of Consciousness-only." East Asian Buddhism began to develop its own unique doctrinal literature with the rise of the Tiantai School and its  major representative, Zhiyi (538–597 CE) who wrote important commentaries on the Lotus sutra as well as the first major comprehensive work on meditation composed in China, the "Mohe Zhiguan" (摩訶止観). Another important school of Chinese Buddhism is Huayan, which focused on developing their philosophical texts from the "Avatamsaka". An important patriarch of this school is Fazang who wrote many commentaries and treatises. The Tripitaka Koreana, which was crafted in two versions (the first one was destroyed by fire during the Mongol invasions of Korea), is a Korean collection of the Tripitaka carved onto 81,258 wooden printing blocks during the 13th  century. Still intact in good condition after some 750 years, it has been described by the UNESCO committee as "one of the most important and most complete corpus of Buddhist doctrinal texts in the world". Zen Buddhism developed a large literary tradition based on the teachings and sayings of Chinese Zen masters. One of the key texts in this genre is the "Platform Sutra" attributed to Zen patriarch Huineng, it gives an autobiographical account of his succession as Ch'an Patriarch, as well as teachings about Ch'an theory and practice. Other texts are Koan collections, which are compilations of the sayings  of Chinese masters such as the "Blue Cliff Record" and "The Gateless Gate". Another key genre is that of compilations of Zen master biographies, such as the "Transmission of the Lamp". Buddhist poetry was also an important contribution to the literature of the tradition. After the arrival of Chinese Buddhism in Japan, Korea and Vietnam; they developed their own traditions and literature in the local language. Vajrayana texts. Buddhist tantras. The late Seventh century saw the rise of another new class of Buddhist texts, the Tantras, which focused on ritual practices and yogic techniques such as the use of Mantras , Dharanis, Mandalas, Mudras and Fire offerings. Many early Buddhist Tantric texts, later termed “action Tantras” ("kriyā tantra"), are mostly collections of magical mantras or phrases for mostly worldly ends called "mantrakalpas" (mantra manuals) and they do not call themselves Tantras. Later Tantric texts from the eighth century onward (termed variously Yogatantra, Mahayoga, and Yogini Tantras) advocated union with a deity (deity yoga), sacred sounds (mantras), techniques for manipulation of the subtle body and other secret methods with which to achieve swift Buddhahood. Some Tantras contain antinomian and transgressive practices such as ingesting alcohol and other forbidden substances as well as  sexual rituals. Some scholars such as Alexis Sanderson have argued that these later tantras, mainly the Yogini tantras, can be shown to have been influenced by non-Buddhist religious texts, mainly Tantric Śaivism and the Śaiva tantras. In East Asian Esoteric Buddhism and its Japanese offshoot, the Shingon school, the most influential tantras are those which focus on Vairocana Buddha, mainly, the "Mahavairocana Tantra" and the "Vajrasekhara Sutra." Buddhist Tantras are key texts in Vajrayana Buddhism, which is the dominant form of Buddhism in Tibet, Bhutan and Mongolia. They can be found in the Chinese canon, but even more so  in the Tibetan Kangyur which contains translations of almost 500 tantras. In the Tibetan tradition, there are various categories of tantra. The Sarma or New Translation schools of Tibetan Buddhism divide the Tantras into four main categories: "Anuttarayogatantra" (Higher Yoga Tantra) is known in the Nyingma school as "Mahayoga". Some of the most influential Higher Tantras in Indo-Tibetan Buddhism are the "Guhyasamāja Tantra", the "Hevajra Tantra", the "Cakrasamvara Tantra", and the "Kalacakra Tantra." The Nyingma school also has unique tantras of its own, not found in the other Tibetan schools, the most important of these are the Dzogchen tantras . Other products of the Vajrayana literature. Tibetan Buddhism has a unique and special class of texts called "terma" (Tibetan: "gTer-ma"). These are texts (or ritual objects, etc.) believed either composed or hidden by tantric masters and/or elementally secreted or encoded in the elements and retrieved, accessed or rediscovered by other tantric masters when appropriate. Termas are discovered by tertöns (Tibetan: "gTer-stons"), whose special function is to reveal these texts. Some termas are hidden in caves or similar places, but a few are said to be 'mind termas,' which are 'discovered' in the mind of the tertön. The Nyingma  school (and Bön tradition) has a large terma literature. Many of the terma texts are said to have been written by Padmasambhava, who is particularly important to the Nyingmas. Probably the best known terma text is the so-called "Tibetan book of the dead", the "Bardo Thodol". A sadhana is a tantric spiritual practice text used by practitioners, primarily to practice the mandala or a particular yidam, or meditation deity. The "Sādhanamālā" is a collection of sadhanas. Vajrayana adepts, known as mahasiddha, often expounded their teachings in the form of songs of realization. Collections of these songs such as the  Caryāgīti, or the Charyapada are still in existence. The "Dohakosha" is a collection of "doha" songs by the yogi Saraha from the 9th century. A collection known in English as "The Hundred Thousand Songs of Milarepa" was composed by Tibetan Buddhist yogi Milarepa and is especially popular amongst members of the Kagyu school. The "Blue Annals" () completed in 1476, authored by Gölo Zhönnupel (Tibetan: "gos lo gzhon nu dpal", 1392–1481), is a historical survey of Tibetan Buddhism with a marked ecumenical view, focusing upon the dissemination of various sectarian traditions throughout Tibet. Namtar, or spiritual biographies, are another popular form  of Tibetan Buddhist texts, whereby the teachings and spiritual path of a practitioner are explained through a review of their life story. Kūkai wrote a number of treatises on Vajrayana Buddhism, and these are influential in Japanese Shingon Buddhism.