The article aims to draw attention to the relationship between the work of the philosopher Giorgio Agamben and the poet Giorgio Caproni. To do so it uses letters, hitherto unpublished, that the Roman philosopher sent to the poet between 1980 and 1989. These letters are now preserved among the papers in the Caproni Collection, in the Contemporary Archive of the Gabinetto Scientifico G. P. Vieusseux in Florence. The article tries to read these pages, crossing them with the main texts of the two authors in that chronological period – in particular Il linguaggio e la morte. Un seminario sul luogo della negatività, Idea della prosa for Agamben and Il conte di Kevenehüller, Res amisssa for Caproni – investigating possible correspondences and cross-references.