“Joachim of Fiore and Apocalyptic Immanence”, 2001-09 (; backlinks; similar):
Apocalyptic envisionings of the historical process, whether philosophical, pseudo-scientific or incarnate as chiliastic movements have always been, and in all likelihood will continue to be, an integral dimension in the unfolding of the Euroamerican cultural chreod. This paper begins with some general observations on the genesis and character of apocalyptic movements.
Then proceeds to trace the psychological roots of Euroamerican apocalyptic thought as expressed in the Trinitarian-dualist formulations of Christian dogma, showing how the writings of the medieval Calabrian mystic Joachim of Fiore (c.1135–1202) created a synthesis of dynamic Trinitarianism and existential dualism within a framework of historical immanence.
The resulting Joachimite ‘program’ later underwent further dissemination and distortion within the context of psychospeciation and finally led to the great totalitarian systems of the 20th century, thereby indirectly exercising an influence on the development of psychohistory itself as an independent discipline.