I think houses live their own lives along a time-stream that's different from the ones upon which their owners float, one that's slower. In a house, especially an old one, the past is closer.

Not everybody believes in ghosts, but I do. Do you know what they are, Trisha?She had shaken her head slowly.Men and women who can't get over their past . . . That's what ghosts are.

The past is obdurate. It doesn't want to change.