  For more recent influence, we need look no further than Jacques Derrida, who mentions Thomas of Erfurt (this time dressed as himself) in connection with the old Peircean idea that logic is a branch of semiotics: “As in Husserl (but the analogy, although it is most thought-provoking, would stop there and one must apply it carefully), the lowest level, the foundation of the possibility of logic (or semiotics) corresponds to the project of the Grammatica speculativa of Thomas d'Erfurt, falsely attributed to Duns  Scotus”.[28]  What impresses Derrida is not so much the reduction of logic to grammar as the deconstructive potential of Husserl's phenomenology of signs. The idea of deconstructing the science of language would have struck Thomas as absurd, of course, though he probably would have felt some affinity with the highly variegated notion of the sign in modern semiotics. 