"He had always been able to sleep in the tightest confines, believing the reasons he couldn’t sleep in the massive beds that everyone in this century owned - no matter how tiny their bedroom- was as much to with being buried alive as it was that too much open space made him feel disconnected, like he was drifting from his moorings. It was a feeling he’d thought he’d overcome; however, in the aftermath of recent experiences, Jack had once again found himself drawn to tight spaces."

—Torchwood Exodus Code, chapter 43, p. 221 (via janestvalentine)