The concept of justice informs our sense of justice, rather than being formed by it. The concept escapes circularity, resting as it does on foundations that are independent of notions of justice. Those foundations can be found in constituent principles such as responsibility, presumption, and convention. Two realms of justice have to be separated: the realm of ,suum cuique‘ and of ,to each, according to‘ ... . Contemporary theories of justice, however, tend to maximize their scope by obliterating ,suum cuique‘. But the importance of the realm of ,suum cuique‘ anchors in fundaments of logic and epistemology which allow justice but little leeway.