Jean-François Lyotard. First acquaintance with Lyotard -- Kant's notion of the sublime and its appropriation by Lyotard -- Transposing Kant to the key of the postmodern -- The role of feelings in Lyotard's political judgment -- Universality revisited -- Jacques Derrida. The Nietzschean influence -- Derrida and phenomenology -- Derrida's exploration of exteriority and anteriority -- Derrida's political ethics : foundations -- Derrida's political ethics : further elaborations : the international scene.