"Because of his small philosophical output, it is important to indicate in what way Hölderlin's ideas have influenced his contemporaries and later thinkers. It was Hölderlin whose ideas showed Hegel that he could not continue to work on the applications of philosophy to politics without first addressing certain theoretical issues. In 1801, this led Hegel to move to Jena where he was to write the Phenomenology of Spirit.... Schelling's early work amounts to a development of Hölderlin's concept of Being in terms of a notion of a prior identity of thought and object in his Philosophy of Identity." Christian J. Onof, "Johann Christian Friedrich Hölderlin", Internet Encyclopedia of Philosophy. Accessed 15 January 2011.