"I'm going out to clean the pasture
spring; I'll only stop to rake the leaves
away (And wait to watch the water
clear I may):
I shan't be gone long.---You come too.
I'm going out to fetch the little calf
That's standing by the mother. It's so
young It totters when she licks it with
her tongue.
I shan't be gone long.---You come too."
-- Robert Frost
Which phrase best describes the tone that Robert Frost uses in his poem "The Pasture"?