Do not go gentle into that good night the speaker says rage rage against the drying of the night. What does that light represent?

In Dylan Thomas's poem "Do Not Go Gentle into That Good Night," the "light" symbolizes life, vitality, and the struggle against death. The speaker urges resistance to the inevitability of dying, advocating for a fierce, passionate fight to preserve one's existence. This "light" can also represent hope and the human spirit's desire to combat despair and darkness, emphasizing the importance of living fully until the end.