This text appears to be an excerpt from a philosophical or ethical treatise, likely written by Aristotle or another ancient Greek philosopher.

The main argument presented here is that rulers, including ship's captains, will prioritize the well-being of their subjects over their own self-interest. The reasoning behind this claim is based on the idea that a ruler's role is to provide guidance and protection to those under their care, rather than pursuing personal gain.

This text likely supports Aristotle's concept of "eudaimonia" (human flourishing) or his idea of the "common good." In these contexts, Aristotle argues that individuals should prioritize the well-being of society as a whole over their own individual interests.