This is a distinction which is not meant sort of counter-intuitively to suggest that somehow or another, as opposed to what we usually think, writing precedes speech--not at all.

这个区别没有在某种程度上故意地，与我们的直觉相反,暗示，无论如何，与我们通常想的相反,我们通常认为书写是在讲话之前的，完全不是这样。

耶鲁公开课 - 文学理论导论课程节选