Ordinarily she didn’t tend to dream much. Even if she did, she usually had forgotten most of the dream by the time she woke up. Sometimes faint scraps of her dream would get caught on the wall of her consciousness, but she couldn’t retrace these fragments back to any coherent narrative. All that remained were small, random images. She slept deeply, and the dreams she did have came from a very deep place. Like fish that live at the bottom of the ocean, most of her dreams weren’t able to float to the surface. Even if they did, the difference in water pressure would force a change in their appearance.
—Haruki Murakami, 1Q84