He wrote important works about the Ptolemaic dynasty and the Seleucid Empire and translated the works of German historians into French, for example 1883-1885 the Geschichte des Hellenismus by Johann Gustav Droysen.
He was reading in Vienna, Berlin, Munich and Paris with many notable professors like Franz Bopp, the founder of comparative linguistics, Prussian historian Johann Gustav Droysen, Franc Miklošič, one of the most famous Slavic philologists, the founder of sociology Lorenz von Stein and many famous lawyers such as Theodor Mommsen, Rudolf von Jhering and few notable members of German Historical School of Law.
Verstehen was introduced into philosophy and the human sciences (Geisteswissenschaften) by the German historist philosopher Johann Gustav Droysen.
He studied history under Mommsen and Droysen, and much of the time he worked as private secretary to George Bancroft, United States Minister at Berlin.
Johann Sebastian Bach | Johann Wolfgang von Goethe | Gustav Mahler | Johann Strauss II | Gustav Klimt | St. Johann in Tirol | Gustav Holst | Gustav III of Sweden | Johann Heinrich Pestalozzi | Gustav I of Sweden | Johann Albert Fabricius | Gustav Meyrink | Johann Christian Bach | Johann Georg Wagler | Friedrich Gustav Jakob Henle | Johann Pachelbel | Johann Nepomuk Hummel | Johann Gottfried Herder | Johann Nestroy | Gustav Stresemann | Johann Joachim Winckelmann | Johann Gottlieb Fichte | Johann Bernhard Fischer von Erlach | Gustav Noske | Johann Homann | Johann Friedrich Böttger | Gustav III | Gustav, Hereditary Prince of Sayn-Wittgenstein-Berleburg | Gustav Fischer | Johann Kuhnau |