We are on the Titanic and there aren't enough life boats.

Jaha

Silence! The crimes of the Mountain cannot be answered by one man. Wanheda knows this. Her actions show us a promise for a new future. A world in which violence does not always answer violence. A world in which our children can flourish. Without the shadow of death. This prisoner is banished from my land. He will live but he will live with the ghosts of those he has lost. Haunted until the end of his days by the knowledge that he is the last of his kind.

Lexa

Being a good leader means knowing which battles to fight.

Kane

The queen is dead. Long live the king!

Lexa

I am more than capable of separating feelings from duty!

Lexa

Murphy: There's somebody else. Okay? I'm sorry.
Ontari: Is she a Commander too?
Murphy: Nope.
Ontari: Would she kill you if you ever lied to her? Did anything to break her trust or upset her in even the slightest way?
Murphy: Oh, the things I do to survive.

Here we go again. Pleading for the life of a traitor... who you love.

Octavia

Harper: Or we could just shock-lash Pike's fascist ass and hand him to the Grounders.
Kane: That would be murder. Not to mention treason. And that's not who we are.
Miller: Maybe it's who we need to be.
Kane: Not yet.

ALIE: Let me ease their pain, Clarke. We can save the human race. Together.
Clarke: You don't ease pain. You overcome it. And we will.

Your fight is over, Lexa of Trikru... The commander's fight goes on.

Titus

Lexa: You're angry, Clarke. But I know you. What you've done haunts you. And it's easier to hate me than to hate yourself.
Clarke: Oh, I can do both.

In this world, when people leave, they don't come back.

Murphy

The 100 Quotes

Miller: What does it mean?
Bellamy: It means Clarke's alive. And we're gonna get her back.

Bryan: Are we ever gonna be done fighting?
Miller: Hell yes. We're gonna build a house on a lake. We're gonna plant corn. And raise chickens. And grow old.