In this paper, I argue that a serious philosophical investigation of the domain of the perlocutionary is both possible and desirable, and I show that it possesses a distinctively moral dimension that has so far been overlooked. I start, in Section II, by offering an original characterisation of the distinction between the illocutionary and the perlocutionary derived from the degree of predictability and stability that differentiates their respective effects. In Section III, I argue that, in order to grasp the specificity of the perlocutionary, we must focus on the total speech situation, which I define as conversation. Then, in Section IV, I show that an investigation of the domain of the perlocutionary requires us to draw a conceptual dist...