In recent decades, interreligious dialogue has become an integral part of theological reflection and religious practices. In different ways and contexts, the aim is inclusion, but the actors involved and the quality of the dialogue determine the success of the encounter. In my presentation, drawing on philosophical and theological tradition, I would like to address a preliminary—but indispensable—dimension for the success of interreligious dialogue, namely, what we mean by "dialogue" and what expectations the use of this word stimulates. I will do so by sharing some reflections on certain aspects that are crucial to the success of dialogue, in particular the distinction between dialogue, argumentation, and negotiation, and the analysis of the different modes of inclusion that they require.