 Lange returned throughout his career to questions of pedagogy and the history of pedagogy. Knoll concludes that, despite his many publications and lectures on pedagogy, despite his collaboration with K. A. Schmid on the Encyklopädie des gesammten Erziehungs- und Unterrichtswesens, Lange appears not to have made a significant impact, either on his contemporaries or in the history of pedagogy (Knoll 1975a, 8). He attempted to give lectures on pedagogy when he started teaching at the University of Bonn, but failed to generate any interest among the students for his lectures (Knoll 1975b, 112–13). Knoll’s claims are dubious, however. As Beiser (2014a) points out, almost all professors in Jena at the time had trouble attracting students to their lectures because “there were not enough students”, and it is hard to imagine that Bonn was much different (p. 41). Moreover, Jacobsen (1999), Köhnke (1991), and others observe that Max Weber counted Lange’s lectures among his favorites (Jacobsen 1999, 7 and passim), and that the pedagogist Friedrich Paulsen, and the philosophers and pedagogists Paul Natorp and Hans Vaihinger, among others, were influenced significantly by Lange’s work (Köhnke 1991, 211–213 and passim). Ultimately, Lange was to have a profound influence on Max Weber (Jacobsen 1999). Finally, Lange’s colleague in Bonn, Friedrich Überweg, wrote in his well-known and widely used textbook Grundriss der Geschichte der Philosophie notes Lange’s influence on the pedagogist and educator Theobald Ziegler (1846–1918) (p. 249).