The last virtue, which unites and orders all of the other virtues, is justice. Justice can also be considered in a more specific sense, as one of the virtues. Both justice in the specific sense and justice as the whole of virtue are defined in relation to other people, but justice in the specific sense is concerned with honor, property, safety and similar things, while justice in the larger sense is concerned with virtue as a whole. Another subset of justice is distributive justice. What is just in distribution should be in some way according to merit, but not all agree what that merit should be.
Natural justice is that which is just in all times and places.
Conventional justice is that which is made up of laws and customs. All laws are to some extent just because any law is better than no law, but are always at least slightly flawed in that they must be formulated universally and cannot take into account all specific circumstances. As a result, a judge should rule in accordance with the intention of the lawmaker or the idea behind the law when the law does not seem to properly fit the situation. Prudence is the intellectual virtue of practical reason. It is concerned with human actions and gives a person the ability to choose what the virtuous mean is in specific situations.