Living a morally good life today is a challenge. But we become fully and authentically human precisely by the decisions we make every day–some of them relatively simple, others complex and difficult. Once a choice is made, we still must claim the moral resolve and strength of character to implement it. Virtues are precisely the sustained habits that help us maneuver life's many choices and to become the good people that we want to be. St. Thomas Aquinas offers the classic Christian...
