The quote "It requires no small degree of ability to know when to conceal one’s ability" suggests that it takes a significant level of skill and wisdom to understand when it’s best to hide one’s talents or abilities. This isn’t about being deceitful or falsely modest, but rather about strategic discretion and discernment. It’s about understanding that there are situations where revealing your full capabilities may not be beneficial, and could even be detrimental.

For instance, in a competitive environment, showing all your cards at once might give your competitors an advantage. They could take your ideas or strategies, or even use your strengths against you. Similarly, in a social situation, openly displaying all your abilities might come off as boastful or intimidating, which could alienate others.

This idea can be applied in various aspects of today’s world. In the professional sphere, it’s about knowing when to step up and when to step back. For example, if you’re in a leadership role, there might be times when it’s more beneficial to let your team take the lead and showcase their abilities, rather than overshadowing them with your own. This can foster a more cooperative and empowering work environment.

In terms of personal development, this quote speaks to the importance of self-awareness and emotional intelligence. It’s about understanding and managing your own abilities in relation to the context you’re in and the people you’re interacting with. It’s also about recognizing that your abilities are tools that can be used strategically, rather than just attributes to be flaunted.

Overall, this quote emphasizes the value of tact and discretion, and the wisdom in understanding that sometimes, less is more. It’s not always about being the best, but about knowing when to shine and when to let others shine.