91 People can develop certain habits that might appear as moral values: fortitude, sobriety, hard work and similar virtues. Yet if the acts of the various moral virtues are to be rightly directed, one needs to take into account the extent to which they foster openness and union with others. That is made possible by the charity that God infuses. Without charity, we may perhaps possess only apparent virtues, incapable of sustaining life in common. Thus, Saint Thomas Aquinas could say – quoting Saint Augustine – that the temperance of a greedy person is in no way virtuous. Saint Bonaventure, for his part, explained that the other virtues, without charity, strictly speaking do not fulfil the commandments “the way God wants them to be fulfilled”.
Source: Fratelli Tutti (Vatican.va)