"Yeah, it won't be long and that novelty will wear off," the Doctor replied with a little smile. "Then, next thing I know, you'll be telling me to shut up."

He could only imagine what it was like for Jack. He knew almost what it was like. He had Jack connected to those monitors for years, watching him sit there, silent and still. But the Doctor forced himself outside, he forced himself to live rather than to dwell (though there was a not inconsiderable amount of dwelling, too). Jack had no one. No one but the TARDIS and the Doctor's body.

"Properly on the wagon, though, you?"