Good merchandise quickly finds its way to another market

This advice suggests that good things, whether they are products or people, are recognized and sought after by those who appreciate quality. If something is valuable or of high quality, it will naturally attract the attention of those who recognize its worth. This is why it is important to remain true to one's principles and values, as they will attract people who share the same values and beliefs.

The advice also implies that there is no need to compromise one's values or principles in order to be recognized and appreciated. People of value will eventually find others who appreciate them for who they are, without having to sacrifice their core beliefs or values.

In summary, this Neapolitan advice emphasizes the importance of staying true to oneself and one's principles, as good things will naturally be recognized and appreciated by those who share the same values.