To throw out some more RTW quotes
"Vae Victus"
(Woe to the conquered)

"Conquered we conquer"

Now for some that aren't in RTW

"It is better to die for the emperor than live for your self"
"Even in death I still serve" - the Dreadnaught

"The emperor protects"
"Beware the alien, the mutant, the heritic" -the force commander

"An open mind is like a fortress with it's gates unbarred, and unguarded"
"Venerate the immortal emperor"
"Knowledge is power, hide it well" -the Librarian

"Hey I didn't steal any buffs I got reciepts right here"
"I shot the sheriff, the duputy, and his wee doggy too"
"Shut up da bat can't hear wher he's goin"