We cannot say writing came into being belatedly with respect to speech in order to reproduce, imitate, or transcribe speech.

我们不能说书写比演讲产生得更晚,是为了复制，模仿，或者是记录下演讲的内容。

耶鲁公开课 - 文学理论导论课程节选

He's just insisting that we cannot understand writing to be derivative.

他只是想说明我们不能将书写理解成为衍生物。

耶鲁公开课 - 文学理论导论课程节选