Because just as good morals, if they are to be maintained, have need of the laws, so the laws, if they are to be observed, have need of good morals. (Machiavelli, 1513-1517)

[Law] is nothing else than an ordinance of reason for the common good, made by him who has care of the community, and promulgated.  (Aquinas, 1265–1274)

Note(s):

1. Aquinas, T. (1265–1274). Summa Theologica, First Part of the Second Part, Question 90, Article 4.
2. Machiavelli, N. (1513-1517). Discourses on the First Decade of Titus Livius. (A. Gilbert, Trans.) Duke University Press.