The paper clarifies some prominent aspects of Rudolf Eucken’s Philosophy of Life that, despite its vast influence in the late nineteenth and the early twentieth centuries, is nowadays mostly forgotten. More specifically, I will reconstruct Eucken’s philosophical diagnosis of the spiritual crisis affecting European and Western civilization in relation to the concepts of culture, history, and worldview. First, I will offer an analysis of the spiritual crisis in its two core aspects: as a crisis of culture and as a crisis (...) of the historical present stemming from the unprecedented polarization of vying worldviews. Second, I will identify the defining traits of Eucken’s original and systematic concept of Weltanschauung through a detailed comparison with Ernst Haeckel’s naturalistic worldview, an early version of scientific reductionism. Third, I will show how the problem of clashing worldviews both configures and responds to the present crisis and how such a problem hinges on a latent process of falsification of life. In doing so, I will shed light on Eucken’s belonging to Lebensphilosophie by elucidating the relation between philosophy and life as well as the task of philosophy vis-à-vis the present crisis. (shrink)