Sir Elihu Lauterpacht has dedicated his entire life to international law, both from point of view of doctrine and of practice, as advisor, arbitrator and judge. He leaves behind an indelible legacy to international law, including the International Law Reports, of which he was an editor since 1960, and the Lauterpacht Centre for International Law of the University of Cambridge. Sir Eli was elected as associate de l’Institut de Droit international in 1979 during the session of Athens, after which he became titular member in 1983 during the session of Cambridge. He has always been an active member of our Institute. He participated in the work of various commissions, in particular the commissions on “The Limitations Imposed by International Law on Jurisdiction to Adjudicate”, “The Legal Consequences for Member States of the Non-fulfilment by International Organizations of their Obligations toward Third Parties” and “The Activities of National Judges and the International Relations of their State”. In 1999, during the session of Berlin, the Institute adopted a Resolution creating a Constitutional Commission of which Sir Elihu Lauterpacht was Rapporteur. The works of this commission resulted in the adoption of a resolution for internal use during the session of Vancouver. Recently, I had proposed him to become member of the Commission on the History of the Institute, but his state of health prevented him from participating in the works of this commission.