"Vendler claims that these key words are replaced by "miracle" and "black ink" respectively in the quatrain, citing as evidence the shift of focus from organic to inorganic, which parallels the same shift occurring more broadly from the octave to the sestet, as well as the presence of the letters i, a, c, and l visually yoking miracle to black ink.Stephen Booth supports this line of criticism, noting the juxtaposition of "hand" and "foot" in line 11, suggesting someone being tripped up and perhaps mirroring the shift to come in the couplet.