“ After studying philology and especially ancient classics and Sanskrit at Bonn and Berlin (1830–1835) , he took the degree of doctor of philosophy and established himself in 1837 at Bonn as Privat docent for classical literature. He had already, in his Goethes Faust in seiner Einheit und Ganzheit (1836) and Goethe als Dramatiker (1837) , advocated a new critical method in interpreting the German classics, which he wished to see treated like the ancient classics. He subsequently turned his attention almost exclusively to the poets of the German classical period, notably Goethe and Schiller. ”

“ In 1846 he accepted the post of librarian at the Roman Catholic gymnasium in Cologne, where he died on the 16th of December 1901. Düntzer was a painstaking and accurate critic, but lacking in inspiration and finer literary taste ”