The first Chapter of Nāgārjuna’s Mūlamadhyamakakārikā offers a critique of causation that includes the Abhidharmic category of the ‘four conditions’. Following the South-Asian commentarial tradition, this article discusses the precise relationship between Madhyamaka philosophy and its fundamental Abhidharmic background. What comes to light is a more precise assessment of Madhyamaka ideas about viable conventions, understood as the process of dependent arising. Since this is primarily in the sense of conceptual dependence, it involves sentiency as a necessary causal element, and the (...) relationship between sentiency and conceptuality is highlighted by Nāgārjuna and his commentators. Viable conventions exclude the possibility of a non-contingent core, and the systems and categories that revolve around such non-contingent element (ātman) are discarded by the Madhyamaka even at a conventional level. (shrink)