I'll Never Let Go, Jack

This is one of the most iconic lines in cinematic history. In the final scene, after the Titanic has sunk and most of the passengers have perished, Jack and Rose are clinging to a wooden door that can only support one of them. Jack sacrifices himself to keep Rose afloat, and they exchange their last words.

Jack makes Rose promise that she will live on and have a fulfilling life, and that she will never let go of that promise. Rose tearfully agrees, and says "I'll never let go, Jack". She repeats this phrase as she holds his hand, even after he has died from hypothermia. The line is a powerful expression of love, loyalty, and grief, and it resonates with audiences around the world.