Phra Ajahn Looang Boo Sim Buddhacaro (1909-1992) was born on the 26th November 1909 in Sakhon Nakhon Province, North-East Thailand. His parents were farmers and dedicated supporters of the local monastery. At the age of 17 Looang Boo Sim took novice ordination and shortly afterwards became a disciple of the Ajaan Mun. Looang Boo Sim stayed with Ajaan Mun and various of his senior disciples for many years, taking full ordination at the age of 20 at Wat Sri Candaravasa, Khon Kaen.
In later years he was the Abbot of a number of monasteries in various parts of Thailand and was given the ecclesiastical title of Phra Khroo Santivaranana in 1959. In 1967 he established a monastery in the remote mountains of Chiang Dao in Chiang Mai province that remained his residence until his death in 1992.
Simply So, by Ajaan Sim Buddhacaro, translated from the Thai by Jayasaro Bhikkhu (1995; 43k/14pp.)