In this quote from "Don Quixote," Cervantes discusses the nature of virtue versus nobility. He suggests that virtue is something that can be cultivated and achieved, unlike noble lineage, which is inherited. The character Sancho is encouraged to value virtuous deeds over the advantages that come from birthright, implying that true worth comes from one’s actions rather than their familial background.
This perspective emphasizes that while lineage may carry significance, it is personal virtue that truly defines a person's character. Hence, individuals should aspire to create admirable qualities through their own efforts rather than feeling inferior to those who are born into privilege. Virtue, being achievable, holds a value that surpasses mere bloodlines, advocating for a society where merit and moral actions are paramount.