Final answer:
Coelho continues to teach the reader about the major themes of his book, specifically The Soul of the World and the Universal Language, through Santiago's interactions with other characters during his journey.
Step-by-step explanation:
Coelho continues to teach the reader about the major themes of his book, specifically The Soul of the World and the Universal Language, while Santiago is traveling within the larger scope of the caravan traveling across the desert. One way Coelho accomplishes this is through Santiago's interactions with various characters he meets along his journey. For example, through his conversations with the crystal merchant, Santiago learns about the importance of pursuing one's Personal Legend and connecting with the Soul of the World. Additionally, Santiago's encounters with the Englishman and the alchemist further exemplify the exploration and understanding of the Universal Language.