(Mexico).
       Born in 1903. Head of the Libraries Departament of the Ministry of Education from 1922 to 1924 before being appointed Professor of French Literature at the Univesity of Mexico City. In 1929 he joined the diplomatic services, in which he occupied various posts in Europe. Under-Secretary for Foreign Affairs (1940-1943) then Minister of Education (1943-1946), in which capacity he launched a campaign on an unprecented scale to combat illiteracy.
       Nominated Minister of Foreign Affairs in 1946 he had, a year earlier, led the Mexican delegation to the London conference establishing UNESCO. Appointed Director-General in 1948, he resigned four years later. He died in 1974.