Leo Fitz: I thought HYDRA was defeated after World War II.

Phil Coulson: It was. S.H.I.E.L.D. was founded in the wake of that victory.

Leo Fitz: And now they’re back?

John Garrett: HYDRA always comes back.

Phil Coulson: Cut off a head, two more will take its place.

John Garrett: Is it a head? I thought it was a limb.

From Agents of S.H.I.E.L.D. – Season 1 Episode 17: ‘Turn, Turn, Turn’ (1×17) | Produced by ABC Studios & Marvel Studios