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In 1922 the University of Buenos Aires (UBA) Council approved a motion tosend an invitation to Albert Einstein to visit Argentina and give a course oflectures on his theory of relativity. The motion was proposed by Jorge Duclout(1856-1927), who had been educated at the Eidgenossische Technische Hochschule,Zurich (ETH). This proposal was the culmination of a series of initiatives ofvarious Argentine intellectuals interested in the theory of relativity. In avery short time Dr. Mauricio Nirenstein (1877-1935), then the university'sadministrative secretary, fulfilled all the requirements for the university'sinvitation to be endorsed and delivered to the sage in Berlin. The visit tookplace three years later, in March-April 1925.  The Argentine press received Einstein with great interest and respect; hisearly exchanges covered a wide range of topics, including internationalpolitics and Jewish matters. Naturally, the journalists were more eager to hearfrom the eminent pacifist than from the incomprehensible physicist. However,after his initial openness with the press, the situation changed and Einsteinrestricted his public discourse to topics on theoretical physics, avoiding somecontroversial political, religious, or philosophical matters that he had freelytouched upon in earlier interviews.. [abridged].

Einstein's unpublished opening lecture for his course on relativity theory in Argentina, 1925