When Sexy talks to the Doctor

The Doctor's Wife

IDRIS: I've been looking for a word. A big, complicated word, but so sad. I've found it now.
DOCTOR: What word?
IDRIS: Alive. I'm alive.
DOCTOR: Alive isn't sad.
IDRIS: It's sad when it's over. I'll always be here, but this is when we talked, and now even that has come to an end. There's something I didn't get to say to you.
DOCTOR: Goodbye?
IDRIS: No. I just wanted to say hello. Hello, Doctor. It's so very, very nice to meet you.