He remembered his connexion with Florence when he wrote Romische Briefe von einem Florentiner (Leipzig, 1840-44), and his residence in Rome was also responsible for his Geschichte der Stadt Rom (3 vols., 1867-70)..
In 1900 Nietzsche's Briefe began to be published.
His chief claim to remembrance is that it was he who first put Schiller's earlier dramas on the stage, and it is to him that the poet's Briefe an den Freiherrn von Dalberg (Karlsruhe, 1819) are addressed.
In the German Mercury he published, in the years 1786-87, his Briefe fiber die Kantische Philosophie, which were most important in making Kant known to a wider circle of readers.
Subsequently there have appeared Briefe an Chr.