atta-kilamatha:'self-mortification',is one of the two extremes to be avoided,the other extreme being addiction to sensual pleasures (kāma-sukha),whilst the Noble 8-fold Path constitutes the Middle Path (majjhima-paṭipadā,q.v.).See the Buddha's first sermon,"The Establishment of the Realm of Dhamma" (Dhamma-cakkappavattana-Sutta).