Game of Thrones, Season 1

Maester Aemon:
How many winters have you seen, Lord Tyrion?

Tyrion Lannister:
Eight, no, nine.

Maester Aemon:
All of them brief?

Tyrion Lannister:
They say the winter of my birth was three years long, Maester Aemon.

Maester Aemon:
This summer has lasted nine, but already reports from the Citadel tell us the days grow shorter. The Starks are always right eventually - winter is coming. This one will be long, and dark things will come with it.

Commander Mormont:
We've been capturing wildlings, more every month. They're fleeing south; the ones who flee say they've seen the White Walkers.

Tyrion Lannister:
[dismissive] Yes and the fishermen of Lannisport say they see mermaids.

Commander Mormont:
One of our own rangers swore he saw them kill his companions. He swore it...right up to the moment Ned Stark chopped his head off!

Maester Aemon:
The Night's Watch is the only thing standing between the realm and what lies beyond, and it has become an army of undisciplined boys and tired old men. There are less than a thousand of us now; we can't man the other castles on the Wall. We can't properly patrol the wilderness. We've barely enough resources to keep our own lads armed and fed.

Commander Mormont:
Your sister sits by the side of the King. Tell her we need help.

Maester Aemon:
And when winter does come...gods help us all if we're not ready!