The poem was written by

Gerard Manley Hopkins was a Victorian poet known for his innovative use of language and meter. While his works are celebrated for their vivid imagery and exploration of nature, he did not write the poem in question, which is attributed to John Milton.

Robert Herrick was a 17th-century poet primarily recognized for his lyrical poetry, often celebrating themes of love and nature. Despite his contributions to English literature, he is not the author of the poem being referenced, which is crafted in Milton's unique style.

Percy Bysshe Shelley was a key figure in the Romantic movement, known for his radical themes and emotional depth. While his poetry is significant and impactful, he did not compose the poem in question, which aligns more closely with Milton’s thematic concerns and stylistic approach.

Samuel Taylor Coleridge, another major Romantic poet, is celebrated for his imaginative works and philosophical musings. However, the poem in question is not his; it bears the hallmark of Milton’s distinctive voice and themes, particularly those exploring moral and existential dilemmas.