There are other connotations in this wonderful poem, and I will list a few. First, a connotation is the implied or underlying meaning of a word or phrase. Basically, a word or phrase can have both a literal and implicit meaning.
In the poem, Thomas suggests that "wise men at their end know dark is right." Here, the poet is saying that wise men understand the inevitability of death and that they accept it ("dark is right"). Here, "dark" refers to both the absence of light (literal meaning) and death (connotative meaning).
Despite their wisdom, however, these men do not "go gentle into that good night." Although wise men accept the inevitability of death, they do not embrace it unequivocally. We can accept something and yet, dislike its reality.
Here's another connotation : Thomas says that even good men "rage against the dying of the light." Here, "light" refers to both literal illumination and the breath of life (connotative meaning). Thomas is saying that, even good men (towards the end of...
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