From Halopedia, the Halo wiki

Quotes I've heard

About my country

"Spartans do not ask how many, but where they are"
-Spartan motto

"Freedom or Death".
-National Anthem

"Greeks don't fight like heroes, heroes fight like Greeks."
-Winston Churchill

"For the sake of historical truth I must verify that only the Greeks, of all the adversaries who confronted us, fought with bold courage and highest disregard of death."
-Adolf Hitler

"In many ways we are all sons and daughters of ancient Greece."
-Nia Vardalos

"The seven wise men of Greece, so famous for their wisdom all the world over, acquired all that fame, each of them, by a single sentence consisting of two or three words."
-Robert South

From movies

"The moment that we stop fighting for each other, that is the moment that we lose our humanity!"
2012, the movie

"Is this what you left me for?!"
Troy, Menelaus to former wife Helen about a defeated Paris

"Exactly. Ain't that a bitch.."
Avatar, Trudy (the pilot) to her crew

Epic song lyrics

"I don't believe in the existance of angels, but looking at you I wonder if that's true..."
"Nick Cave, Into My Arms"