Kantian eschatology

One reads Bultmann on eschatology and thinks, How Kantian!

Then one thinks: Or is it the other way round? Is Bultmann a Kantianization of Christian eschatology, or is Kant a philosophical riff on Lutheran or Pietist eschatology?

One reads Bultmann on history and eschatology and hears Derrida whispering in the background.

Then one thinks: Or is it the other way round? Is deconstruction just an heretical eschatology?