between craftsman and tool, soul and body, master and slave; the latter in each case is benefited by that which uses it, but there is no friendship nor justice towards lifeless things. But neither is there friendship towards a horse or an ox, nor to a slave qua slave. For there is nothing common to the two parties; the slave is a living tool and the tool a lifeless slave. Qua slave then, one cannot be friends with him. But qua man one can; for there seems to be some justice between any man and any other who can share in a system of law or be a party to an agreement;
(5) Beraz, esklaboa den aldetik, ez dago esklaboarekiko adiskidetasunik, baina bai gizakia den aldetik, gizaki ororen eta legean eta hitzarmenean parte har dezakeen guztiaren artean nolabaiteko zuzentasun bat omen baitago, eta, hortaz, baita nolabaiteko adiskidetasun bat ere, gizakiak diren aldetik.