The knowing the analyst listens to issues from the articulation of what the analysand says, not of what he thinks. If the author is an effect of the text, this is because the latter is a product.
Language produces a text of which the author is the effect.
In Jacques Lacan the old ideology of expression is subverted, that of imitation and reflection as well. The unconscious knowledge, the articulation of desire in language, implies that the word does not express the subject any more than it reflects the world. Starting from the idea that language is an instrument, one was forced to conclude that language should communicate knowledge, should express the subject, should reflect reality. The discovery that language does not communicate knowledge imposes the idea that language is badly done, the discovery that the subject does not express itself implies that the subject is deceitful, the discovery that language does not reflect reality leads one to the ineffable. At once, evil, falsehood, and mystery are introduced.