Dream's Navel

In The Interpretation of Dreams (1900a), Freud wrote, "There is often a passage in even the most thoroughly interpreted dream which has to be left obscure; this is because we become aware during the work of interpretation that at that point there is a tangle of dream-thoughts which cannot be unraveled and which moreover adds nothing to our knowledge of the content of the dream. This is the dream's navel, the spot where it reaches down into the unknown" (p. 525).

This careful formulation seems to contradict Freud's whole approach to...