In his E. J. Pratt lecture "Silence In the Sea," critic Northrop Frye argued that Service's verse was not "serious poetry," but something else he called "popular poetry": "the idioms of popular and serious poetry remain inexorably distinct." Popular poems, he thought, "preserve a surface of explicit statement" – either being "proverbial, like Kipling's 'If' or Longfellow's 'Song of Life' or Burns's 'For A' That'," or dealing in "conventionally poetic themes, like the pastoral themes of James Whitcomb Riley, or the adventurous themes of Robert Service." https://en.wikipedia.org/wiki/Robert_W._Service