Ledi Sayadaw U Ñaṇadhaja (, ; 1 December 1846 – 27 June 1923) was an influential Theravada Buddhist monk. He was recognized from a young age as being developed in both the theory (Abhidhamma) and practice of Buddhism and so was revered as being scholarly. He wrote many books on Dhamma in Burmese and these were accessible even to a serious lay person, hence he was responsible for spreading Dhamma to all levels of society and reviving the traditional practice of Vipassanā meditation, making it more available for renunciates and lay people alike. Biography Sayadaw began his studies at age 20 in Mandalay at Thanjaun. While there he was considered to be a bright and ambitious young monk but his work was scholarly; there is no evidence that Sayadaw engaged in a serious meditation practice during his years in Mandalay. Leaving Mandalay after a great fire in 1883 caused the loss of his home and his written work to that time, Sayadaw returned to the village of his youth. Soon, Sayadaw founded a forest monastery in the "Ledi forest" and began practicing and teaching intensive meditation. It was from this monastery that he would take his name, Ledi Sayadaw, meaning "respected teacher of the Ledi forest." In 1885, Ledi Sayadaw wrote the Nwa-myitta-sa (), a poetic prose letter that argued that Burmese Buddhists should not kill cattle and eat beef, since Burmese farmers depended on them as beasts of burden to maintain their livelihoods, that the marketing of beef for human consumption threatened the extinction of buffalo and cattle and that the practice was ecologically unsound. He subsequently led successful beef boycotts during the colonial era, despite the presence of beef eating among locals and influenced a generation of Burmese nationalists in adopting this stance. In 1900, Sayadaw gave up control of the monastery and pursued more focused meditation in the mountain caves near the banks of the Chindwin River. At other times he traveled throughout Burma. Because of his knowledge of pariyatti (theory), he was able to write many books on Dhamma in both Pali and Burmese languages such as, Paramattha-dipani (Manual of Ultimate Truth), Nirutta-dipani, a book on Pali grammar and The Manuals of Dhamma. At the same time he kept alive the pure tradition of patipatti (practice) by teaching the technique of Vipassana to a few people. Legacy Ledi Sayadaw was one of the foremost Burmese Buddhist