Which literary device is used in the highlighted selection in the excerpt from Emerson's "Self-Reliance"? oxymoron metaphor simile.

Emerson often employs metaphor in "Self-Reliance," using vivid comparisons to illustrate complex ideas about individuality and self-trust. For instance, when he compares the soul's journey to that of a river, he's inviting readers to envision the flow of life, suggesting that true self-reliance comes from embracing one’s unique path amid external pressures. If you're analyzing Emerson's use of language, pay close attention to how he crafts his arguments. A common mistake is to overlook how these devices contribute to the theme. For example, misunderstanding the metaphorical language might lead you to a literal interpretation, which can distort the intended message about the importance of inner strength and personal conviction.