Dr. Radcliffe knew that the best way to keep you busy was to give you something to fight.

Aida [to May]

I like you, Agent May. I don't wish for you to suffer. I promise to make this quick and painless.

Aida

He believed in me before I believed in myself.

Daisy [on Coulson]

Coulson: You know, no one likes a smartass.
Yo-Yo: That hasn't been my experience.

If she discovers you've launched an unauthorized investigation into her, she'll launch an investigation into you.

Talbot [to Coulson]

I'm happy Turtle Man came out to play this morning...

Yo-Yo [to Mack]

This is politics, Phil. That means politicians. They are a festering cesspool of toxic waste fires.

Talbot [to Coulson]

Question. Why does it matter if the original May is dead or alive?

Aida [to Radcliffe]

I believe that Inhumans deserve the same rights as anyone else in this country.

Mace

You like statistics, right? There's a 100% chance I get inside your head. The question is how long you live afterward.

Simmons [to the sniper]

Radcliffe: What happened? She was supposed to be in a relaxing simulation!
Aida: She was in a day spa, getting a hot stone massage.
Radcliffe: How hot did you make the stones?

You know that saying. If a jet crashes in the woods and there's no one around to hear it, you stay close to the guy with super strength.

Coulson

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

Hill: Then New York was invaded by aliens, and they were beaten back by among others, a giant green monster, a costumed hero from the 40s, and a god.
Ward: I don't think Thor is technically a god
Hill: You haven't been near his arms.

Hill: What does S.H.I.E.L.D. stand for Agent Ward?
Ward: Strategic Homeland Intervention, Enforcement and Logistics Division.
Hill: And what does that mean to you?
Ward: That someone really wanted our initials to spell SHIELD.