Coleridge really loves nature, and he wants his son to love nature, too. When he discusses what it would take for his son to become a poet in "Metrical Feet," he stresses the importance of taking "delight" in all aspects of the natural world, the "things of earth, water, and skies" (12). It seems that an understanding of and love for nature are essential to becoming a poet – perhaps even more essential than understanding things like meter and rhyme. A true poet is a man of nature.
The speaker's language in the second half of the poem suggests that a poet's relationship to the natural world is actually more important than a poet's knowledge of meter.
The rhyme on "Coleridge" and "whole ridge" emphasize that man is part of nature.