In the book "the alchemist" by paulo coelho, what is santiago's quest? what is santiago's quest about?

This story, dazzling in its simplicity and wisdom, is about an Andalusian shepherd boy named Santiago who travels from his homeland in Spain to the Egyptian desert in search of treasure buried in the pyramids. Santiago has a dream about finding a treasure in the pyramids of Egypt. A gypsy woman and an old man claiming to be a mysterious king advise him to pursue it. "To realize one's destiny is a person's only obligation," the old man tells him. "And, when you want something, all the universe conspires in helping you to achieve it." With the courage of an adventurer, Santiago sells his sheep and travels to Tangiers in Africa. After a thief steals his money, Santiago takes a job with a crystal merchant who unwittingly teaches Santiago important lessons for his long journey ahead. After working at the crystal shop for a year, Santiago earns enough money to cover his losses and return home. But then something unexpected happens. On a desert caravan, Santiago meets an intriguing Englishman. The Englishman's passion for knowledge and his relentless quest to uncover the secrets of alchemy inspire Santiago to pursue his own dream of finding the treasure. As the Englishman searches for the two hundred year old alchemist who resides in the desert oasis, Santiago falls in love with a young woman, Fatima. Exposed to the greatest and eternal alchemy of all - love -Santiago thinks he has found the treasure. But the greatest test of all is yet to come. With the help of the alchemist, Santiago completes the last leg of his journey - dangerous and infused with discoveries of the most profound kind - to find that the treasure he was looking for was waiting for him in the place where he least expected.

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