After introducing some of the many issues raised by intergenerational justice, the paper will focus in particular on the motivational problem: Why should we be motivated to act in favor of others when sacrifices on our behalf are required? And more specifically, how can such sacrifices be justified when those we act for are neither born nor easily unidentifiable? While many accounts of moral motivation exist, most scholars will grant that emotional engagement is a strong motivational drive. Hence, the paper (...) will focus on such a drive. I will, first, argue that immediate emotions and empathy – understood uniquely as a form of emotional attunement – are insufficient to grant that the acts they motivate are morally acceptable. The case of future generations is a perfect example of such insufficiency. Second, I will discuss the possibility of regulated emotions and sympathy playing such a role. In fact, by regulating and educating emotions, a conscious or “rational” component is added, which could help avoid the biases and limitations immediate affective phenomena show. Such a “rational” component would also enable us to provide a criterion to distinguish cases in which emotions drive us in morally acceptable or unacceptable directions. In the second part of the paper, the sentimentalist tradition will be reconsidered, with particular attention to Adam Smith’s moral proposal – since the sympathetic engagement of an impartial spectator could be an excellent example of a regulated and educated emotional attunement of the kind required to deal with some of the many moral issues future generations raise and, in particular, with the motivational problem itself. (shrink)