Suum cuique Suum cuique "" ( ), or "Unicuique suum", is a Latin phrase often translated as "to each his own" or "may all get their due". It has been significant in the history of philosophy and as a motto. The Latin phrase relates to an old Greek principle of justice which translates literally into English as "to each his own". Plato, in "Republic", offers the provisional definition that "justice is when everyone minds his own business, and refrains from meddling in others' affairs" (Greek: "...τὸ τὰ αὑτοῦ πράττειν καὶ μὴ πολυπραγμονεῖν δικαιοσύνη ἐστί...", 4.433a). Everyone should do according to his abilities
Ulpian XV 686 c. Scholars today agree that Athenaeus's Ulpian is not the historical Ulpian, but possibly his father. The date of the real Ulpian's death in 223 AD has been wrongly used to estimate the date of completion of "The Deipnosophists". In the study of law, he is mostly remembered for the phrase ""Juris praecepta sunt haec: honeste vivere, alterum non laedere, suum cuique tribuere" (The basic principles of law are: to live honorably, not to harm any other person, to render each his own)". Ulpian Ulpian (; ; c. 170223) was a prominent Roman jurist of Tyrian ancestry. He