Buddhaghosa

Buddhaghosa was a 5th-century Indian Theravada Buddhist commentator, translator and philosopher. He worked in the Great Monastery (''Mahāvihāra'') at Anurādhapura, Sri Lanka and saw himself as being part of the Vibhajjavāda school and in the lineage of the Sinhalese Mahāvihāra.

His best-known work is the ''Visuddhimagga'' ("Path of Purification"), a comprehensive summary of older Sinhala commentaries on Theravada teachings and practices. According to Sarah Shaw, in Theravada this systematic work is "the principal text on the subject of meditation." The interpretations provided by Buddhaghosa have generally constituted the orthodox understanding of Theravada scriptures since at least the 12th century CE.

He is generally recognized by both Western scholars and Theravadins as the most important philosopher and commentator of the Theravada, but is also criticised for his departures from the canonical texts. Provided by Wikipedia