- Robert Crawley, Earl of Grantham: Tell your friend Bricker to stop flirting with Isis. There is nothing more ill-bred than trying to steal the affections of someone else's dog.
- Daisy Mason: [to Mrs. Patmore referring to the house's new radio] Why is it called a wireless when there is so many wires?
- Robert Crawley, Earl of Grantham: [to Cora about all the guests they've been getting] Do people think that we're some sort of hotel that never presents a bill?
- Robert Crawley, Earl of Grantham: [after hearing HM King George V's radio broadcast, the very first for a royal] A king on the wireless!
- Charles Carson: I prefer to think of him on the throne, milord.
- [James is leaving Downton]
- Jimmy Kent: [to Thomas] We have been friends, and I'm sad to see the back of you.
- Anthony Gillingham: Plantagenets are as susceptible as housemaids when it comes to sex.
- Lady Mary Crawley: Are we talking about sex... or love?
- Anthony Gillingham: Oh, that is a question that mankind has been wrestling with since the dawn of time.
- Joseph Molesley: Now that Jimmy, uh, James, has gone, do I take it that I am new first footman.
- Charles Carson: Since you are the only one, you are first, second, third, and last. Make what you will of it.