Abstract
The article aims to defend Karl Löwith’s secularization thesis from the criticism made by Hans Blumenberg. Löwith’s thesis claims that modern philosophy of history is a secularized Christian eschatology. Blumenberg accuses Löwith’s thesis of substantialism. Following Sjoerd Griffioen, the article shows that this criticism fails. The article presents Blumenberg’s arguments that the idea of progress cannot be derived from eschatology. These arguments are refuted by the analysis of the work of Joachim of Fiore and providing a distinction between two kinds of progress. The article is written from the perspective of intellectual history, detaching from the dispute over the judgement of modernity.