He gained great influence over his contemporaries by his fine perception of the depths of feeling that could be evoked from the subjects he used. To this period of his best work belong a "Child Jesus on the Lamb", "Belisarius at the Porta Pinciana at Rome", and "Job and His Friends". In 1798 the French drove him from Rome, and he went to Vienna, as he found no place in his native town of Stuttgart, on account of his conversion. At Vienna he illustrated books and made drawings, many of which were etched or engraved by Rahl and Leybold. While there he also painted a "Mater dolorosa", a "Caritas", and "Criton visiting Socrates in Prison".