In 1810 he removed to Stuttgart; and from that time till his death he was loaded with honours. State affairs and an honourable commission from the German booksellers took him to the Vienna congress; and in 1815 he was deputy-elect at the Württemberg diet. In 1819 he became representative of the nobility; then he succeeded to the offices of member of committee and (1824) vice-president of the Württemberg second chamber. He was also appointed Prussian Geheimrat, and knight of the order of the Württemberg crown; King William I. of Württemberg having already revived the ancient nobility in his family by granting him the patent of Freiherr (Baron) Cotta von Cottendorf . Meanwhile, such publications as the "Polytechnische Journal", the "Hesperus", the "Württembergische Jahrbücher", the "Hertha", the "Ausland", and the "Inland" issued from the press. In 1828–1829 appeared the famous correspondence between Schiller and Goethe. Cotta was an unfailing friend of young struggling men of talent.