The capabilities approach is the theory according to which, in order to assess people's quality of life and reflect on the basic political entitlements, we should consider what people are capable of doing and being. Focusing mostly on Nussbaum's account, a number of scholars analysed the metaethical structure underlying the approach, showing her Aristotelian and Kantian sources. This article explores another aspect of Nussbaum's theory which has so far been somewhat overlooked: the role of emotions in the justification and motivational (...) support of the approach. After showing the importance Nussbaum places on compassion (and other benevolent emotions) to warrant her moral theory, I argue that – assuming her own cognitive account of compassion – her argument begs the question. I will then contend that Nussbaum's case does not have the inner tools to overcome such a circularity, trying to suggest, in conclusion, a possible way out which is consistent with it. (shrink)