In Greek mythology, the purpose of the Golden Fleece was to serve as a symbol of authority and kingship. It was the object of Jason's quest and represented the ultimate prize that signified legitimacy and power over a kingdom. The story emphasizes themes of bravery, adventure, and the pursuit of glory. The quest for the Golden Fleece illustrates the journey of overcoming obstacles and rivalries, showcasing how heroes can achieve great feats when motivated by noble goals. Ultimately, it reflects the complexities and struggles involved in the pursuit of ultimate achievements.