 John A. Rea wrote about the poem's "alliterative symmetry", citing as examples the second line's "hardest – hue – hold" and the seventh's "dawn – down – day"; he also points out how the "stressed vowel nuclei also contribute strongly to the structure of the poem" since the back round diphthongs bind the lines of the poem's first quatrain together while the front rising diphthongs do the same for the last four lines.In 1984, William H. Pritchard called the poem's "perfectly limpid, toneless assertion" an example of Frost demonstrating how "his excellence extended also to the shortest of figures", and fitting Frost's "later definition of poetry as a momentary stay against confusion.