Rule 1: The Doctor Lies.

Well, The World Is Vastly Counted In Favour Of Men At Every Level - Except If You Live In A Civilised Country And You’re Sort Of Educated And Middle-class, Because Then You’re Almost Certainly Junior In Your Relationship And In A State Of Permanent, Crippled Apology. Your Preferences Are Routinely Mocked. There’s A Huge, Unfortunate Lack Of Respect For Anything Male.

You Know When Sometimes You Meet Someone So Beautiful — And Then You Actually Talk With Them, And Five Minutes Later They're As Dull As A Brick. But Then There's Other People, And You Meet Them And You Think: "not Bad, They're Okay," And Then You Get To Know Them, And Their Face Sort Of Becomes Them, Like Their Personality's Written All Over It; And They Just — And They Turn Into Something So Beautiful.

We Have A Plan To Top It. And I Do Think Our Plan Is Devastating. We’ve Practically Reduced Our Cast To Tears Telling Them The Plan … We’re Probably More Excited That We’ve Ever Been About Sherlock.

What Is Immutable About Sherlock Holmes? He Favors Reason Over Emotion, But Actually Underneath That, There Is A Lot Of Emotion Going On. You Can't Suddenly Make Him Ordinary Because He Would Hate That. He's Not Suddenly Going To Be Somebody Else.

Rose: 'if You Are An Alien, How Come You Sound Like You're From The North?' Doctor: 'lots Of Planets Have A North!