Here's a random sampling of quotes from Captain David Edward Anderson and Commander Zavala. I think they sound a little bit like each other. Don't you? Try reading each of these quotes as the Arbiter and as Sylens and I think you'll agree with me that they sound something alike.

"Were it so easy."
"All too easy."
"They will fail. And we will make them pay for trying"
"...it shall not harm another."
"Remember... who you are..."
"We are never stronger than when we stand side-by-side in battle."
"There was only one ship."
"They don’t fail."
"Is it?"
"Indeed."
"Baseball."
"We did all we could. Let us move the survivors up to the hangar, there is a lift outside"
"Fall back to my shield!"