As Santiago observes the sheep that he cares for, he makes the observation that they only care about eating and drinking water, unable to make decision on their own and being content with what they are given. What does this symbolize for Santiago?

Santiago's observation of the sheep leads him to the conclusion that people, like sheep, have become complacent.... safety and security have replaced personal growth and challenges. This incident serves to symbolize what Santiago doesn't want for his own future, who deosn't wish to merely survive. Santiago wants to live life, thus, embracing his own journey.