Francesc de Paula Mirabent (1888-1952) was one of the most important aesthetes in the post-war period in Spain, as his writings and publications show. However, the unpublished text discussed in this paper does not address aesthetics, but the author’s view of cultural diversity, which he presented to the Institut International de Philosophie in Paris. It is the perspective of a philosopher who has become disillusioned with the main ideologies and who finds a way to counteract tyranny and oppression in the defence and value of the individual. In some of his contributions, particularly his reappraisal of emotional aspects of the individual, we can recognise innovative concepts that are still present in current education. Furthermore, the fact that the text was in French and presented in Paris in 1948 gave Mirabent the necessary freedom to write without constraints, and to keep the text from being catalogued with his works in Spain.