Visuddhimagga or The Path of Purification, is a Theravada Buddhist commentary written by Buddhaghosa approximately in 430 CE in Sri Lanka. It is considered the most important Theravada text outside of the Tipitaka canon of scriptures. The Visuddhimagga is a systematic examination and condensation of Buddhist doctrine and meditation technique. The various teachings of the Buddha found throughout the Pali canon are organized in a clear, comprehensive path leading to the final goal of nibbana, the state of complete purification. Originally composed in the fifth century, this new translation provides English speakers insights into this foundational text. In the course of this treatise full and detailed instructions are given on 40 subjects of meditation aimed at concentration, an elaborate account of Buddhist Abhidhamma philosophy, and explicit descriptions of the stages of insight culminating in final liberation.
Bhadantacariya Buddhaghosa composed the Visuddhimagga in the early part of the fifth century. Bhikkhu Ñanamoli was ordained as a monk in Sri Lanka, where he spent 11 years living in a monastery and translating the texts of the Theravada Buddhism into English. He was the author of The Discourse on Right View, Middle Length Discourses of the Buddha, and The Life of the Buddha.
See also Vimuttimagga – The Path of Freedom