The following quote is taken from the episode The Wedding of River Song. It gave hints that the Doctor’s name would be revealed leading up to the 50th Anniversary of Doctor Who. This episode originally aired on October 01, 2011.
Doctor Who Timeless Quote #29
Dorium: So you’re going to do this, let them all think you’re dead?
The Doctor: It’s the only way. Then they can all forget me. I got too big, Dorium, too noisy. Time to step back into the shadows.
Dorium: And Doctor Song: in prison, all her days?
Dorium: So many secrets, Doctor. I’ll help you keep them, of course.
The Doctor: Well, you’re not exactly going anywhere, are you?
Dorium: But you’re a fool, nonetheless. It’s all still waiting for you – the fields of Trenzalore, the fall of the Eleventh,and the Question.
The Doctor: Goodbye, Dorium.
Dorium: The first question!
The question that must never be answered!
Hidden in plain sight!
The question you’ve been running from all your life!
Doc — tor — Who?!
What is your favorite quote from Doctor Who?