Right of nations vs natural right

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Often appears with: slavery as right of nations · slavery and bondage · natural reason · justice as a virtue · gaius and ulpian cited · custom and unwritten law

Usually: commentary or gloss (1) · detachment (1)

Summa Theologica, Part II-II (Secunda Secundae) primary

Thomas, Aquinas, Saint · c. 1271–1273 (Part II-II written within this period)
PART II-II ("Secunda Secundae") > Scene i.]. Hence, as regards man, who has God above him, charity which unites him to God, is greater than mercy, whereby he supplies the defects of his neighbor. But of all the virtues which relate to our neighbor, mercy is the greatest, even as its act surpasses all others, since it belongs to one who is higher and better to supply the defect of another, in so far as the latter is deficient. (157/298)

It considers whether the “right of nations” matches natural right, rejecting the idea of total sameness by distinguishing natural right common to all animals from what human reason and resultant utility govern among men.

according to the Philosopher (Polit. i, 2). Now "slavery belongs to the right of nations," as Isidore states (Etym. v, 4). Therefore the right of nations is a natural right. Obj. 3: Further, right as stated above (A. 2) is divided into natural and positive. Now the right of nations is not a positive right, since all nations never agreed to decree anything by common agreement. Therefore the right of nations is a natu…