considered a distinguishable sub-lineage that is sometimes referred to as the "Chanthaburi Line". An influential western student in the line of Ajahn Lee is Thanissaro Bhikkhu. Forest monasteries in the South Ajahn Buddhadasa Bhikkhu (May 27, 1906 - May 25, 1993) became a Buddhist monk at Wat Ubon, Chaiya, Surat Thani in Thailand on July 29, 1926 when he was twenty years old, in part to follow the tradition of the day and to fulfill his mother’s wishes. His preceptor gave him the Buddhist name “Inthapanyo” which means “The wise one”. He was a Mahanikaya monk and graduated at the third level of Dharma studies in his hometown and in Pali language studies at the third level in Bangkok. After he finished learning the Pali language, he realized that living in Bangkok was not suitable for him because monks and people there did not practice to achieve the heart and core of Buddhism. So he decided to go back to Surat Thani and practice rigorously and taught people to practice well according the core the teaching of the Buddha. Then he established Suanmokkhabālārama (The Grove of the Power of Liberation) in 1932 which is the mountain and forest for 118.61 acres at Pum Riang, Chaiya district, Surat Thani Thailand. It is a forest Dhamma and Vipassana meditation center. In 1989, he founded The Suan Mokkh International Dharma Hermitage for international Vipassana meditation practitioners around the world. There is a 10-day silent meditation retreat that starts on the 1st of each month for the whole year which is free, of no charge for international practitioners who are interested in practicing meditation. He was a central monk in the popularization of the Thai Forest Tradition in the South of Thailand. He was a great Dhamma author because he wrote so many Dhamma books that we have well known: Handbook for Mankind, Heart-wood from the Bo Tree, Keys to Natural Truth, Me and Mine, Mindfulness of Breathing and The A, B, Cs of Buddhism etc. On October 20, 2005, The United Nations Educational, Scientific and Cultural Organization (UNESCO) announced praise to “Buddhadasa Bhikkhu”, an important person in the world and celebrated the 100th anniversary on May 27, 2006. They held an academic activity to disseminate the Buddhist principles that Ajahn Buddhadasa had taught people around the world. So, he was the practitioner of a great Thai Forest Tradition who practiced well and spread