Answer and Explanation:
Santiago is the protagonist of "O Alquimista", by Paulo Coelho. He is a complex character, since he shows a variety of thoughts and desires that do not follow a pattern of linearity within the story, but that are deep and difficult to understand many times, showing facets of personality that even Santiago himself cannot identify in Your self.
At the beginning of the story, we see that Santiago goes in search of his "personal legend" in search of his greatest desire, because he knows that whoever reaches the personal legend attains extremely valuable tessurises. He is sure that he is correct about what he wants, but with the course of history, he realizes that discovering his own desire is more difficult to find the treasure he covers. He realizes that to find out what his greatest desire is he will have to take a journey within himself and recognize all his own dimensions and yes, this is a difficult path, but the only one that is rewarding.