Hegel

Georg Wilhelm Friedrich Hegel (August 27, 1770 – November 14, 1831) was a German author and philosopher

Background
Hegel was prolific philosopher and one of the fundamental figures of western philosophy by creating or advancing many schools of philosophy, with his principle and most famous contributions being of absolute idealism and Hegelianism which contains Hegelian dialectics. After his death, Hegel would go on to influence many other philosophers, often called neo-Hegelians, such as Karl Marx.

Appearances
Georg Wilhelm Friedrich Hegel is indirectly mentioned in Fallout 2 and Fallout: New Vegas.