This quote conveys the idea that people often engage in activities not for their intended purpose, but for the peripheral benefits or enjoyment they derive from them. In the context of the quote, Pope suggests that some people attend church not primarily for the religious teachings (doctrine), but for the music that’s part of the service.

This quote highlights the human tendency to seek pleasure and enjoyment, sometimes even in places where it’s not the primary focus. It also suggests that people can find value in unexpected aspects of an experience, and that these unexpected benefits can be just as, if not more, important than the intended purpose of the activity.

Applying this idea to today’s world or personal development, it suggests that sometimes the enjoyment or satisfaction we derive from the journey can be more important than the destination or the intended goal. For instance, someone might take up running not to win races or improve their health, but because they enjoy the solitude and the chance to clear their mind. Or, someone might choose a job not because it’s the most lucrative, but because they enjoy the work environment or the daily tasks.

This quote encourages us to find and appreciate the unexpected or secondary benefits in our activities. It’s a reminder that the "music" in our lives can come from unexpected places, and that it’s important to be open to these sources of enjoyment and satisfaction. It also emphasizes the importance of personal satisfaction and enjoyment in our pursuits, rather than focusing solely on the intended or "official" purpose of an activity.