Iuris praecepta sunt haec: honeste vivere, alterum non laedere, suum <ius> cuique tribuere

(The basic principles of ius are: to live honestly, not to harm other people, and to recognize the rights of others).

Mosaic of Justinian, San Vitale, Ravenna

Ius pluribus modis dicitur: uno modo, cum id quod semper aequum ac bonum est ius dicitur, ut est ius naturale. (The word "ius" can be understood in several ways: in one way ius is that which is always fair and good, such as natural law).