"the laws of the political community [are supposed to] direct the life of human beings to the virtues"

"the political community was originally instituted for the sake of living, namely, that human beings adequately find the means to be able to live.  But the political community's existence results in human beings living, and living well insofar as the laws of the political community direct the life of human beings to [the] virtue[s]."

"est enim primitus facta gratia vivendi, ut scilicet homines sufficienter invenirent unde vivere possent: sed ex eius esse provenit, quod homines non solum vivant, sed quod bene vivant, inquantum per leges civitatis ordinatur vita hominum ad virtutes."

     St. Thomas Aquinas, Commentary on Aristotle's Politics I.1.23 (17 in Regan), trans. Richard J. Regan ((Indianapolis:  Hackett Publishing Company, Inc., 2007), 15).  Latin from Corpus Thomisticum.  See also ST I-II.92.1.Resp., trans. FEDP:

the proper effect of law is to lead its subjects to their proper virtue [(hoc sit proprium legis, inducere subiectos ad propriam ipsorum virtutem)]: and since virtue is 'that which makes its subject good,' it follows that the proper effect of law is to make those to whom it is given, good [(proprius effectus legis sit bonos facere eos quibus datur)], either simply or in some particular respect. For if the intention of the lawgiver is fixed on true good, which is the common good regulated according to Divine justice, it follows that the effect of the law is to make men good simply. If, however, the intention of the lawgiver is fixed on that which is not simply good, but useful or pleasurable to himself, or in opposition to Divine justice; then the law does not make men good simply, but in respect to that particular government.