The Question That Must Never Be Answered
Dorium, in “The Wedding of River Song”:
On the fields of Trensillor, at the fall of The Eleventh, when no living creature can speak falsely or fail to answer. A question will be asked. A question that must never, ever, be answered.
Mysterious characters are appealing while the mystery remains. Disappointment is with the answering of the mystery, not in the answer.
The Doctor’s character is strong due to what we see him do. It is not because we know his past.
Who the Doctor is should never, ever, be answered.