Final answer:
Hernán Cortés used the quote metaphorically to express the Spaniards' desire for wealth and power through acquiring gold.
Step-by-step explanation:
Hernán Cortés, the Spanish conquistador, meant that gold was the solution to the yearning and desire for wealth that the Spaniards possessed. The quote is metaphorical, expressing the idea that the Spaniards believed that accumulating gold would satisfy their deepest desires and fulfill their ambitions. Cortés and other Spanish explorers were driven by legends of vast quantities of gold in the Americas, and they saw the acquisition of gold as a means to achieve power, privilege, and prosperity.