'But I have promises to keep, And miles to go before I sleep' is stated by______

• Robert Frost is American National poet.• His famous poems:- Stopping by Woods on a Snowy Evening,- Nothing Gold Can Stay,- After Apple-Picking,- Road Not Taken,- Mending Wall,- Christmas Trees,- Home Burial,-A Way Out (one act play) etc.• "The woods are lovely, dark and deep, But I have promises to keep, And miles to go before I sleep, And miles to go before I sleep" taken from his famous poem Stopping by Woods On a Snowy Evening.Source: Website Lecture and Encyclopedia of Britannica.