"So much has turned to ashes," said the Doctor, "that when they burn now, I'm not sure I can feel it anymore, not really."

o__o

The grin returned, and she felt a little frightened at how easily, how quickly, he could bury all those things that haunted him. "You're my best friend, Martha Jones; I'd tell you anything."

O__O



maybe the doctor can also no longer feel his brain telling him "oi, i dunno if you noticed, but every time you land somewhere or do something, something completely unexplained happens and yet you do not investigate. INVESTIGATE."