Wear your learning, like your watch, in a private pocket: and do not pull it out and strike it; merely to show that you have one. If you are asked what o'clock it is, tell it; but do not proclaim it hourly and unasked, like the watchman.

In this letter to his son, Lord Chesterfield encapsulates the virtue of modesty in intellectual pursuits. By comparing knowledge to a watch, he emphasizes the importance of discretion. Knowledge, like time, should be readily available for practical use when needed, not ostentatiously displayed to impress others. This metaphor suggests that true wisdom lies in knowing when to share one's insights rather than in constantly showcasing one’s education. The advice reflects a broader theme of the letters: navigating social spaces with grace and humility. Chesterfield warns against the twin dangers of pedantry and ignorance, advocating for a balanced approach where one's learning enhances rather than dominates conversation. This guidance remains relevant today, promoting the idea that those who are truly wise often choose restraint over exhibitionism.