Answer:
One poem in which William Wordsworth uses compare/contrast to emphasize the value of nature is "I Wandered Lonely as a Cloud," also known as "Daffodils." In this poem, the speaker describes a field of daffodils and compares them to the "continuous line" of the clouds in the sky. The speaker finds joy and a sense of companionship in the daffodils, in contrast to the loneliness he feels when he sees the clouds alone.
Here is a quote from the poem that illustrates this comparison:
"Continuous as the stars that shine
And twinkle on the Milky Way,
They stretched in never-ending line
Along the margin of a bay:
Ten thousand saw I at a glance,
Tossing their heads in sprightly dance."
In this quote, the speaker compares the daffodils to the stars in the sky, emphasizing their abundance and liveliness. By comparing the daffodils to the stars, the speaker suggests that they are just as beautiful and inspiring as the night sky.
The poem has a joyful and optimistic tone. This can be inferred from the positive imagery and the use of words like "dance" and "sparkling" . Through his joyful and peaceful tone, he wants to convey the beauty and serenity of nature and how it can uplift and change one's mood.
The purpose of the comparison and contrast to the clouds, is that he wants to emphasize the loneliness of his own life and how the natural beauty of the daffodils, rejuvenated his mind. He wants to convey the idea that nature can provide a sense of companionship and inspiration that cannot be found in the human world.