Ace and The Doctor in “The Last Day Part Two”

Ace

I've lived this life full of confusion, contradiction… science upended, paradox after paradox! I'm still not sure how it fits together.

It doesn't. It never does. The ambitious young child, the firebrand student full of his own self-importance, the selfish adult desperate to protect their little corner of the world… the regretful old man, the regretful old fool waiting for death. How can all these lives, all these personalities, be reconciled into one being?

Ace

We're all an error of continuity.