Castany Prado’s chapter offers a fuller understanding of Borges’s cosmopolitanism, which has been influential in contemporary Western literature in general, and, more specifically, in postnational Latin American literature. The author traces the roots of cosmopolitanism back to the teachings of the Cynics, the Epicureans, the Stoics, and the Neo-Platonists, before identifying their literary projections in contemporary Hispanic literature. He then argues that the postnational paradigm is neither the direct result of recent globalization processes, nor can it be understood in solely internationalist terms; rather, it is heir to a millennia-long tradition of philosophical cosmopolitanism. This is especially important in the area of postnational Latin American literature, for which, according to Castany Prado, Borges constitutes a decisive influence.