Freud argues that the foundation of all dream content is the fullfillment of wishes, whether one is conscious or not. The unsconscious wants to show the wish fulfilled but the preconscious won't allow it which then only an understanding of the dream-work can explpain the dream.

The first few lines caught my attention after reading them a few times. "When you have thoroughly grasped the dreamcensorship and representation by symbols, you will not yet, it is true, have completely mastered the distortion in dreams, but you will nevertheless be in a position to understand most dreams". When one is reading literature, they may interpret it according to what they know. The "symbols" in the story may make sense and provide a storyline but the reader may not have grasped the entire concept of the story that the author was trying to make. In other words, the reader will interpret what they are reading according to what they know and believe and the author could be aiming for a totally different concept.