For Derrida, the language of dialectical materialism is shot through with metaphors disguised as concepts

[...] Nietzsche saw nothing but blindness and multiplied error in the various attempts to arrive at truth through logic or abstract reason. Philosophy had based itself unwittingly on a series of buried metaphors none the less potent and beguiling for their common and commonsense usage. Nietzsche carries out what amounts to a full-scale programme of deconstruction, attacking every last vestige of philosophic truth and certainty. The fundamental 'laws' of Aristotelian logic are held to be expressions of our present inability to think beyond them, rather than possessing an absolute validity. [...]

Deconstruction is inimical to Marxist thought at the point where it questions the validity of any science or method set up in rigid separation from the play of textual meaning

[...] The end-point of deconstructive thought, as Derrida insists, is to recognize that there is no end to the interrogative play between text and text. Deconstruction can never have the final word because its insights are inevitably couched in a rhetoric which itself lies open to further deconstruction reading. Criticism can only be deluded in its claim to operate (as Eagleton puts it) 'outside the space of the text' on a plane of scientific knowledge. There is no metalanguage.