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The article discusses Menga’s important book and it is divided in three parts: the first one stresses the precise presentation and evaluation of the state of the art about the problem “justice and next generations”; the second one aims at enhancing the passage proposed by Menga from a classical approach to a phenomenological approach to this theme. Third, it analyzes consequences and problems involved in the idea of a deformalization of the temporality which is requested by the emergence of an injunction of justice from the future.

Discussing with several authors belonging to the phenomenological tradition, this paper explores the transition from a model centered on intersubjectivity to one centered on intercorporeity. Theories of intercorporeity based on a reductionist approach are criticized. The category of “need” is investigated in its preliminary ethical meaning, and the relationship between bodies and needs is addressed through an analysis of the philosophies of Emmanuel Levinas and Simone Weil.