Someone like Hitler was interested in power over others, the opposite to self empowerment of the individual. He and his clique were master propagandists and borrowed heavily or simply invented any philosophy that aided their cause.
He personally knew the Germans were still living in mud huts while the classical and ancient civilizations were inventing civilization itself, but that didn't stop the Nazis from promoting the idea of the Germanic master race. It was complete fantasy but it served their purpose to unify the majority in their hatred of others.
