In his novel "Herzog," Saul Bellow presents the idea that great treasures often come with significant challenges, represented metaphorically by dragons. This concept suggests that the most valuable aspects of life, be they personal ambitions, knowledge, or relationships, are often protected by obstacles and hardships that must be faced. Overcoming these challenges is essential to truly appreciate and attain the treasures that life offers.

The metaphor highlights the notion that worth is measured not just by the treasure itself but also by the struggles encountered in pursuit of it. These 'dragons' symbolize fears, doubts, and external adversities that one must navigate. Ultimately, the journey through these trials serves to enrich the value of the treasure, reinforcing the idea that enduring hardship is often a prerequisite for meaningful rewards.