Read the excerpt from “Conclusion” in Walden.

The surface of the earth is soft and impressible by the feet of men; and so with the paths which the mind travels. How worn and dusty, then, must be the highways of the world, how deep the ruts of tradition and conformity! I did not wish to take a cabin passage, but rather to go before the mast and on the deck of the world, for there I could best see the moonlight amid the mountains. I do not wish to go below now.
Which best describes the purpose of the imagery in the excerpt?
It encourages readers to experience Thoreau’s work as if they are taking a journey around the world.
It illustrates Thoreau’s goal to continue exploring the world around him in a unique and fulfilling way.
It encourages readers to embark on their own worldly exploration after they finish Thoreau’s book.
It illustrates the physical and emotional difficulties Thoreau had while living in the world of nature.