The essay provides an interpretation of the specific concept of ”ruinance” (Ruinanz), as this is introduced and developed by Heidegger in his 1921/22 lecture series on ”Phenomenological Interpretations of Aristotle” (GA 61). Instead of accepting this subsequently abandoned concept as a marginal excursus on Heidegger’s part, the interpretation uses it as a lever to explore the interconnectedness of intentionality, falling, destruction, history and finitude, and also the proclaimed necessity of so called ”formally indicative concepts”, of which ruinance itself is a (...) supreme example. (shrink)