The Res Publica, the governing of the state by the people who constituted the state. (It wasn't perfect, but it became the basic notion of how politics could best work. And the attempts to realize it were much more widely attempted than any to put Plato's republic into practice.)
Valerius Claudius Iohannes Curator anno MMDCCLXII Centurio Honorarius Societatis Civis ab MMDCCLIV :: Adversitas bono viro intelligentiam docet. ::