Everything I do Ragnar's for you.

Floki

You know this weakens you. This weakens you in every way.

Bjorn

Harbard: What have I done to you? I haven't done anything to you. I love you.
Aslaug: How can you love me when you sleep with every woman in Kattegat?
Harbard: I don't sleep with every woman. Only those who need me.

We are going to lift the boats up the cliff. Then we are going to carry them across the mountains, past the forts, and then simply slide them back into the river. Upstream.

Ragnar

Bjorn: I hate my uncle. I want to kill him.
Ragnar: Good.

This is how you repay me? When everyone wanted you dead, I kept you alive. You hurt me, brother.

Ragnar

The space between life and death. That's where we are the most alive.

Floki

Aslaug: You had no idea Ragnar had gone away to Paris?
Harbard: No, but I heard about the raid on Paris. I heard he was very sick. I wondered in fact, if he was still alive.
Aslaug: He has gone back to Paris. This time he's taken Ubbe and Hvitserk with him. He's punishing me cause of what happened last time.

Ragnar: You've never spoken to me of Kalf's death. It must have broken your heart.
Lagertha: Of course it didn't. My heart was broken a long time ago.

Come to me and I will put an end to your suffering and heal you... and make you free.

Harbard

Ragnar: I want to know the day that I will die.
The Seer: You will die on the day that the blind man sees you.

Erlendur: This is Earl Kalf's grave? May I ask why you killed him?
Lagertha: I made a promise. I promised I'd kill him for taking my earldom.

Vikings Season 4 Quotes

Einar: There Earl Kalf, you have your answer.
Kalf: And here right now is mine... archers!
Lagertha: I should have done this a long time ago, Einar.

Bjorn: Floki needed to be dealt with. You were incapacitated, I thought it was the right thing to do.
Ragnar: Did you also think that if I wanted him arrested, I would have done it a long time ago? But now you have made it public, and left me with no options.