" I flew round space and time, like a maniac. I smiled and laughed and whirled,
and hoped no one would see through my disguise. I helped where I could, I
fought where it counted and I made peace happen wherever I walked. I saved
life after life, and I knew I was trying to make up for every one I’d taken. More
than anything, I was trying not to count how many children had been on
Gallifrey that day. "
― Steven Moffat , Doctor Who: The Day of the Doctor