The paper, in dialogue with Ferdinando Menga’s book, is devoted to discussing some problems about the issue of responsibility towards future generations. Especially, starting from a few points about the danger of the “bomb”, one wonders how it is possible to be responsible for an act that, among its consequences, will have the one of entirely extinguishing the very future human beings as those to whom one is supposed to respond. The paradox will be that we never could answer for the most criminal act, the one that will destroy humanity. For solving this illogicality, it is necessary to think a new concept of responsibility.