The present article studies the meditative approaches to imperturbability depicted in the?neñjasapp?ya-sutta and its Chinese and Tibetan parallels. By way of introduction to the main theme broached in this discourse, I briefly survey P?li discourses relevant to the early Buddhist notion of imperturbability. Next I examine the presentation given in the?neñjasapp?ya-sutta based on translated extracts from its Madhyama-?gama parallel, noting variations between these two and a Tibetan version extant in?amathadeva’s commentary on the Abhidharmako?abh??ya. In the concluding part of the article, (...) I turn to the relationship between tranquillity and insight reflected in the?neñjasapp?ya-sutta. (shrink)