Rerukane Chandawimala Thero was a Sri Lankan Buddhist monk and author. A personality of Sri Lankan Buddhism in the 20th century, he has been regarded as one of the finest scholars of Tripitaka, the sacred canon of Theravada Buddhism. He was also a Buddhist meditation master, professor of Abhidharma and a former Maha Nayaka of the Swegin chapter of the Amarapura Nikaya. Rerukane Chandawimala Thero was a highly reputed author of Theravada Buddhism, especially on Abhidharma. His books are considered as text books by other authors as well as students.
Theravāda is the most commonly accepted name of Buddhism's oldest existing school.
The school's adherents, termed Theravādins, have preserved their version of Gautama Buddha's teaching or Buddha Dhamma in the Pāli Canon for over a millennium.
Aided by the patronage of Mauryan kings like Ashoka, this school spread throughout India and reached Sri Lanka through the efforts of missionary monks like Mahinda.
Starting at around the 11th century, Sinhalese Theravāda monks and Southeast Asian elites led .