Although Frost wrote some formal and conservative verse, with clear rhyme schemes, he's not known for that kind of poetry. Rather, Frost liked to imitate the sound of regular or rural speech. When you listen to this poem read aloud, it's almost as if you can hear the voice of a rural New England man as he walks through the woods and reminisces about his youth. The speaker occasionally digresses in a very natural way, becoming side-tracked by his own imagination, until he perks up with a "but" or a "so" to get his mind and your attention back on track.