"Everybody knows that everybody dies, and nobody knows it like the Doctor. But I think that all the skies in all the worlds would turn dark if he ever for one moment accepted it.
Everybody knows that everbody dies. But not every day. Not today. Some days are special. Some days are blessed. Some days, nobody dies at all. Some days, when the wind is fair and the Doctor comes to call... everyone lives."
- "Silence in the Library", Doctor Who