"The ontological illusion of pure theory . . . promotes the fiction that Socratic dialogue is possible everywhere and at any time. From the beginning philosophy has presumed that the Muendigkeit posited with the structure of language is not anticipated but real. It is pure theory, wanting to derive everything from itself, that succumbs to unacknowledged external conditions and becomes ideological. Only when philosophy discovers in the dialectical course of history the traces of violence that deform repeated attempts at dialogue and recurrently close off the path to unconstrained communication does it further the process whose suspension it otherwise legitimated: mankind's evolution towards Muendigkeit"
"Knowledge and Human Interests, pp. 314-315"