This quote suggests that actions which come naturally to us, those that are in sync with our inherent abilities and inclinations, are executed most efficiently. This is because these actions do not require us to put in extra effort or time to adapt or learn. They are a part of our innate skill set, hence we are able to perform them swiftly and effectively.

In the context of personal development, this quote can be interpreted as an encouragement to identify and nurture our natural talents. Often, we spend a lot of time trying to master skills that do not come easily to us, while overlooking our inherent abilities. Da Vinci’s quote suggests that focusing on our natural abilities can lead to better efficiency and productivity.

In today’s world, this idea is highly relevant, especially in the workplace. For instance, in a team, different individuals may possess different skill sets. When tasks are assigned based on these natural skills, the team as a whole becomes more efficient. This is the principle behind the concept of ‘division of labor’ in economics.

Moreover, in the era of technology and automation, there is a growing emphasis on ‘human skills’ – skills that are unique to humans and cannot be replicated by machines, such as creativity, empathy, leadership etc. These skills often come naturally to us and hence, can be accomplished in the briefest manner.

In conclusion, Da Vinci’s quote is a reminder of the power and efficiency of natural actions. It encourages us to recognize, value, and utilize our inherent skills, both for personal development and for contributing effectively to our society.