Whether "epikeia" is a part of justice?

Objections

Objection 1 : It seems that "epikeia" is not a part of justice. For, as stated above (Question [58], Article [7]), justice is twofold, particular and legal. Now "epikeia" is not a part of particular justice, since it extends to all virtues, even as legal justice does. In like manner, neither is it a part of legal justice, since its operation is beside that which is established by law. Therefore it seems that "epikeia" is not a part of justice.
Objection 2 : Further, a more principal virtue is not assigned as the part of a less principal virtue: for it is to the cardinal virtue, as being principal, that secondary virtues are assigned as parts. Now "epikeia" seems to be a more principal virtue than justice, as implied by its name: for it is derived from {epi}, i.e. "above," and {dikaion}, i.e. "just." Therefore "epikeia" is not a part of justice.
Objection 3 : Further, it seems that "epikeia" is the same as modesty. For where the Apostle says (Phil. 4:5), "Let your modesty be known to all men," the Greek has {epieikeia} [*{to epieikes}]. Now, according to Tully (De Invent. Rhet. ii), modesty is a part of temperance. Therefore "epikeia" is not a part of justice.