‘The interpretation of dreams’ considers, in light of modern neuroscience, the ways in which Sigmund Freud's psychoanalysis theories were both right and wrong. Freud's correctly emphasized dreams' primitive emotional character. He was correct in his basic assumption that dreams are (in part) driven by instinctive force (emotions) and that these emotions are loosely connected to mental content. Freud's assumptions of disguise and censorship as the basis of dream bizarreness, however, were flawed. Instead, dreams reveal rather than conceal emotion and instinct. Dream prediction is also discussed and it concludes that we dream because our brains are activated during sleep, and we do so even if our primitive drives are turned on by that activation.