He is a doctor, a healer, a man whose only goal in life is to protect those around him. He holds his friends’ hands when they are afraid or weary. He clutches evil to his chest, adamant that he can teach it to be good.
He takes you into a world that is not your own, a world where there are no lasting arguments or deaths or wars (except for the one with the Daleks, who need to just die off already), a world where he takes you by the hand and whispers "run", telling you without even speaking the words that everything is going to be okay.
And it is.