Overview
Mos maiorum, the ancestral way, was the unwritten moral constitution of Rome. It was custom, precedent, expectation, and inherited discipline.
Importance
The Republic depended on mos maiorum as much as on written law. When custom lost authority, legal forms alone could not save the state.
In the Livarva Trilogy
All three works examine what happens when Romans continue to speak the language of ancestors while acting in a transformed world.