 Practical reasonableness involves not only (i) an intelligent and rationally integrated understanding of practical reason’s principles and of the implications that, under the auspices of the master principle of love of neighbor as self, they have in the form of moral standards, but also (ii) the personal self-governance needed to put those conscientious judgments into effect by choices and corresponding action. So prudentia has many phases or, as Aquinas says, parts, and enters into every other virtue. It is far removed from “prudence” in the sense of “rational self-interest”, for by prudentia one is actively aware that self-interest is self-stunting or indeed self-destructive unless one transcends it by one’s dispositions and acts of justice and friendship or love. (And see 2.7 above.)