Which character in Lost says the recurring line “Live together, die alone”?

Jack Shephard says the recurring line “Live together, die alone” in Lost.

The phrase expresses Jack’s belief that cooperation is essential for the survivors’ survival. He says it prominently in the first-season episode “White Rabbit,” using the words to argue that the group must remain united instead of splitting into isolated individuals.

The line became one of the show’s best-known thematic statements. It reflects Jack’s leadership philosophy and contrasts with the repeated disagreements among the survivors over authority, risk, and trust. The wording also became associated with promotional material and the series’ broader focus on connection and isolation.

John Locke, James “Sawyer” Ford, and Hugo “Hurley” Reyes are all major Lost characters, but none is the canonical speaker of this line. Jack’s position as the group’s principal organizer makes the quotation especially characteristic of him.