Analysis of information sources in references of the Wikipedia article "Twelfth Doctor" in English language version.
He's never going to have a single quest, the Doctor — he wants to have lunch with as many famous people as he can and go to the fairgrounds and have a nice ride in a train — that's what the Doctor's like, he's got attention deficit disorder, racing around trying to entertain himself and have fun with Clara. That's what he wants, that's his mission.