In 1928 he became a researcher at the Centro de Estudios Históricos in Madrid before becoming director of studies for foreigners at the University of Madrid. In 1930, he became a professor of Spanish literature at Madrid and doubled up as originator, organiser and secretary-general of the International Summer School of Santander between 1933 and 1936. This school was set up to accommodate 200 Spanish students (approximately 4 from each of the established universities in Spain) and an international teaching staff.