René-Jean Dupuy and Wolfgang Friedmann were good friends and for a large part shared a common vision of how post-World War II international law was structured and the ways in which it was evolving. It is worth comparing their respective views as they reflect the way in which a generation of international lawyers perceived in particular the impact of international organizations on modern international law seen as a true international legal order. Although influenced by the ideas of that period (the 1960s and 1970s), the views of these two great �men of vision� remain of immense interest for the present and for times to come.