If Coulson doesn't make it out, you get that closure you've been searching for. Closure's not something I ever put much stock in. What I believe in, is moving forward. Never looking back.

Gideon

Ward: Don't worry, I'm not going to hurt you. There's a much simpler way to make you talk.
Fitz: Leave Simmons alone.
Ward: See first thought I had when we met was, wow this guy's really carrying a torch. It was sweet, really. Not adult sweet, more like a cartoon puppy dog with his heart beating outside its chest.
Fitz: Don't do this.
Ward: I even told you to make a move before it was too late. Guess what? Too late.
Fitz: Please.
Ward: Just tell me how she came back and this all ends. Simple as that.

I always thought Fitz would give up the world for you. Looks like now he finally has his chance.

Ward

Gideon: The Von Strucker family vault does not exist.
Ward: Truthfully I'd believe you, if you hadn't sacrificed the only heir to it. You control the vault now, right? The vault is said to have HYDRA's greatest power. Why don't you and I put it to good use?

Thousands of years ago, an Inhuman was born on this planet that was destined to rule it. So powerful, so fearsome, that others were consumed with dread and so they banished it from the Earth. Sent it through the portal to a distant planet. HYDRA was founded with the sole purpose of engineering its return.

Gideon

Daisy: They're not trying to cure Inhumans, they're...
Bobbi: They're turning them.

Today we're launching Operation Spotlight. The objective, to peer into every shadowy corner of the ATCU. The last few days have been hard. What happened with Dr. Garner is tragic, but it has also created a rare moment of opportunity for us. The ATCU brought Dr. Garner's containment module into their research facility. S.H.I.E.L.D. is going to use that as a way to gain access.

Coulson

Coulson: Easy Mack. I like Roz, whether she can be trusted, yet to be determined.
Mack: How is that not a deal breaker?
Coulson: Because the only spies without trust issues are either young or dead. I hope I can trust Roz. I want to. That's why I'm bringing her here, face to face. So I can look her in the eye and find out. Meanwhile, the rest of you will have to go behind her back.

Coulson: I got to admit, handing out the containment as a cure; that's especially sinister.
Rosalind: No, I get weekly reports from... Malick.
Coulson: Excuse me?
Rosalind: Gideon Malick.
Coulson: I know the name; industrialist. He served on the World Council.
Rosalind: He's a friend. I worked with him more than a decade. He advises the President's staff. Helped design the ATCU. Oversees the science division. He gave me the T.A.H.I.T.I. intel.

Fitz: Do you love him?
Simmons: I don't know. I think... yes.
Fitz: Yeah, of course you do. He's strong and smart. And you gave each other hope on the edge of nowhere.
Simmons: Don't do this Fitz.
Fitz: You think I didn't look for dirt on him? I did, and there's nothing. I can't hate him, he's great. Why else would you fall for him? He did everything right.
Simmons: And you dove through a hole in the universe for me.

Lincoln: I went looking for my friends. And those who aren't missing are dead.
Mack: You're telling me this, why?
Lincoln: Because you fought by my side against that thing. It eliminates you as a suspect.
Mack: Why would I be a suspect?
Lincoln: Because you're with S.H.I.E.L.D.
Mack: Okay, I'm not sure I'm following.
Lincoln: Lash is in S.H.I.E.L.D. and with your help I can prove it.

Fitz: So when you said all those things about... I mean, you were tired and dehydrated.
Simmons: I was as clear headed then as I've ever been, when I said all those things. What do you think we should do about it?
Fitz: For now, let's just watch the sunrise.

Agents of S.H.I.E.L.D. Season 3 Quotes

Mack: We lost Fitz again huh? He out there chasing down another ghost story?
Bobbi: He has a theory.
Mack: He's always got a new theory. That's why he locked up that damn rock and won't let anyone in.
Bobbi: He wouldn't dare go in there. He's not totally irrational. The process of digging just helps him cope.
Mack: No, it keeps him from coping. Look, I love the fact that he won't give up hope. I do. But the man's a scientist and the evidence is pointing one way.

Daisy: We try to protect people like you from the world, or from yourself. Unless we have to defend the world against you.
Joey: People like me? What is happening to me?
Daisy: You've experienced what's called a biomorphic event. Short version, your DNA changed.