It is true that St. Thomas Aquinas speaks of certain rights, but these rights are species of the virtue of justice. They are in absolutely no manner similar to how Hobbes, Locke, or later modernity will use the term rights.
What does it mean to be a good person? In modernity, the moral vocabulary of society has shifted from a virtue-based language to one of values. Virtues are rooted in reason and reflect a common moral standard for all men. Values are rooted in the individual and reflect an autonomous moral universe.
"I put for a general inclination of all mankind a perpetual and restless desire of power after power, that ceases only in death."