Swinburne presents birth and death as inseparable twins who rule over every living thing, much like night and day circling endlessly. There’s no struggle between them, no victory of one over the other—just a quiet, shared reign. The speaker’s tone isn’t angry or fearful; it’s more like a calm recognition that these two are the only constants we have. Heaven and earth, the poem suggests, bless them equally, crowning them with flowers, as if they’re not enemies but faithful partners.
In the closing lines, the feeling grows even gentler: joy and sorrow, smiles and tears, blur until they’re almost indistinguishable. What we call happiness and what we call grief might just be two faces of the same rhythm. The mood is solemn but not heavy—a kind of thoughtful peace settles over the whole thing, leaving you with a sense that our comings and goings are part of one unbroken pulse.