Aldo Moro certainly undergoes, in his training as a Catholic intellectual, the influence of Mounier and Maritain’s personalism and is part of the personalist philosophy with a remarkable stature and authority, precisely because of the depth and richness of his thought with the which he has been able to philosophically establish the concept of person in respect of which he has developed a conception of ethical and humanitarian law. For Moro the law is justice and has the task of ordering and humanizing the life of relationships on democratic bases, not leaving aside the ethics that is the essential prerequisite and also aiming to direct life itself to seek the truth that always illuminates and makes brave. With this essay we want to highlight how the conception of law in Aldo Moro connotes itself as a humanitarian right that humanizes relations between men orienting them to the search for truth. Humanitarian law retains its identity even when the juridical ideal translates as force, never identifying itself with brute power, but always remaining a real ideal.