 In the Roman context, the characteristics of Tranquilitas reflected the values at the heart of the Via Romana (the Roman Way) and are thought to be those qualities which gave the Roman Republic the moral strength to conquer and civilize the world.Tranquillitas is often depicted with the attributes which seem to again hint at an association with the grain supply (and tranquility then of a placated and satiated population), a rudder and ears of grain, sometimes a modius or a prow, sometimes leaning on a pilaster (decorative column).The modius was a measuring device used to measure grain/corn.