Final answer:
The King of Salem advises Santiago to follow the path of the heart, emphasizing the importance of pursuing one's passions and finding true fulfillment in life.
Step-by-step explanation:
The King of Salem advises Santiago to follow the path of the heart. In Paulo Coelho's book 'The Alchemist', the King tells Santiago that when a person follows their heart and listens to their desires, the universe conspires to help them achieve those dreams. The King emphasizes the importance of pursuing one's passions and finding true fulfillment in life.