This paper approaches the abiding question of the justice of law within the confined scope of (inter)national constitutionalism and its ultimate principles. Particular attention is devoted both to the originally new conception of the justice of law stemming from the ultimate basic principles of (inter)national constitutionalism and to the main hindrances standing in the way of adjudication - be it domestic, supranational, or international - when attempting to accomplish it with its best distinguishing principle, namely, the principle to provide protection - the "best protection" - for fundamental rights.