Der Untergang des Abendlandes
Declinism is the belief that a society or institution is tending towards decline. Particularly, it is the predisposition, possibly due to cognitive bias, such as rosy retrospection, to view the past more favourably and future negatively. "The great summit of declinism," according to Adam Gopnick, "was established in 1918, in the book that gave decline its good name in publishing: the German historian Oswald Spengler's best-selling, thousand-page work "The Decline of the West"."