Introduction -- Suum cuique tribuere (ancient Rome, c.1000 BC-AD 565) -- Correctio (the early Middle Ages, c.500-1000) -- Auctoritas (the late Middle Ages, c.1000-1453) -- Emulatio (the early Modern Age, 1453-1648) -- Ratio (the Modern Age, 1648-1914) -- Voluntas (the Post-Modern Age, 1914-2004)