Has grammatology, then, the right to expect from linguistics an essential assistance that it has almost never looked for? On the contrary, does one not find efficaciously at work, in the very movement by which linguistics is instituted as a science, a metaphysical presupposition about the relationship between speech and writing? Would that presupposition not binder the constitution of a general science of writing? Is not the lifting of that presupposition an overthrowing of the landscape upon wh