Only a connoisseur can truly understand the nature of a gem, or one who himself possesses that inherent quality.

This beautiful couplet tells us that only a true expert can fully appreciate the depth and value of something rare. Think of it like a skilled jeweler who instantly recognizes the quality of a precious gem. Similarly, only someone who possesses a similar inner essence or profound skill can truly understand another person's unique abilities or experiences. It's about recognizing true worth and understanding from a place of shared knowledge or innate quality. So, to truly appreciate an expert, you often need to be an expert yourself, or at least have a deep understanding of their craft.