What does the "good night" symbolize in Dylan Thomas's "Do not go gentle into that good night"?

Question

*Do not go gentle into that good night* by Dylan Thomas, he begins with "Do not go gentle into that good night". He also uses this as one of two alternating refrains. In this poem, what does the "good night" symbolize?

Answer 1

I believe it symbolizes death. Live life to the fullest.

Answer 2

When trying to find meaning in a poem or work of literature, look closely at all the words that surround what you don’t understand. The words “old age” and “dying of the light” in the first stanza indicate that “good night” means death. This is confirmed by the first line on the second stanza, “Though wise men at their end know dark is right,” meaning that wise men know that death is unavoidable.