In the re-educational classes, he aided in the philosophy course using Wilhelm Windelband's History of Philosophy thus also learning German.
Wilhelm II, German Emperor | Wilhelm II | Wilhelm Reich | Gottfried Wilhelm Leibniz | Georg Wilhelm Friedrich Hegel | Wilhelm Keitel | Friedrich Wilhelm Joseph Schelling | Wilhelm Furtwängler | Karl Wilhelm Friedrich Schlegel | Wilhelm Wundt | Wilhelm Sasnal | Wilhelm Kempff | Wilhelm Busch | Wilhelm Westphal | Wilhelm von Knyphausen | Wilhelm von Bode | Wilhelm Steinitz | Wilhelm Schlenk | Wilhelm Heinrich Roscher | Wilhelm Gesenius | Wilhelm Canaris | Prince Wilhelm of Hesse-Philippsthal-Barchfeld | Friedrich Wilhelm Freiherr von Bülow | Franz Wilhelm Junghuhn | Carl Wilhelm Siemens | Wilhelm von Tegetthoff | Wilhelm von Schütz | Wilhelm von Humboldt | Wilhelm Solheim | Wilhelm Schüchter |
Another important group, the 'Southwest School' (or Baden School, in Southwest Germany) included Wilhelm Windelband, Heinrich Rickert and Ernst Troeltsch.
The second International Congress took place in Geneva in 1904; the third was in Heidelberg, 1908 (with Josiah Royce, Wilhelm Windelband and Benedetto Croce).