As Dylan Thomas's "Do Not Go Gentle into That Good Night" exhorts all who face death to not passively acquiesce to its "close of day," the address becomes personal in the final stanza. For, in lines 16-17, the poet directly addresses his father, D.J. Thomas, a man of letters who taught his son Dylan to love the written and spoken word. Also, it is as if with the death of his father, a part of the poet feels the same "dying light" as he with "fierce tears" suffers against the forthcoming loss of his beloved father. "Do not go gentle..." can have a dual meaning: Rage against death; affirm life as long as possible, and Do not leave me.
This dual meaning is given more significance in light of the fact that Dylan Thomas himself died shortly after his father's death. Thomas had drunk himself to death, not "raged against the night."