Friedrich Nietzsche | Friedrich Schiller | Wilhelm II, German Emperor | Wilhelm II | Friedrich Engels | Wilhelm Reich | Gottfried Wilhelm Leibniz | Carl Friedrich Gauss | Karl Friedrich Schinkel | Friedrich Dürrenmatt | Friedrich Hayek | Caspar David Friedrich | Georg Wilhelm Friedrich Hegel | Friedrich Hölderlin | Friedrich Gustav Jakob Henle | Wilhelm Keitel | Friedrich Ebert | Friedrich Wilhelm Joseph Schelling | Wilhelm Furtwängler | Karl Wilhelm Friedrich Schlegel | Friedrich Gulda | Wilhelm Wundt | Friedrich Rückert | Friedrich Paulus | Wilhelm Sasnal | Wilhelm Kempff | Wilhelm Busch | Johann Friedrich Böttger | Friedrich von Huene | Friedrich List |
He graduated from Princeton in 1849 at the age of eighteen, and went on to study under Johannes Franz in Berlin, under Friedrich Ritschl at Bonn and under Schneidewin at Göttingen, where he received his doctor's degree in 1853.