... there were times when I couldn't help but sense an area inside Kumiko to which I had no access. In the middle of the most ordinary -- or the most excited -- conversation, and without the slightest warning, she might sink into silence. It would happen all of a sudden, for no reason at all (or at least no reason I could discern). It was like walking along the road and suddenly falling into a pit. Her silences never lasted very long, but afterward, until a fair amount of time had gone by, it was as if she were not really there.
Excerpt from The Wind-Up Bird Chronicle
by Haruki Murakami