The present selection of essays on the Roman constitution spans from the archaic period, characterized by augural religion and the dualism of king and popular assembly, through the republican era and the theories developed within it for interpreting political reality and conceptualizing legal frameworks, to the principate of Augustus and its conceptual anchoring in a reinterpretation of specifically Roman traditions, culminating in Justinian and his Christian-influenced traditionalism. The topics address the foundations of the Roman state, the understanding of laws and magistracy, the question of the separation of powers, and the role of jurists. Behrends discusses the influences of philosophical teachings on jurists, as well as drawing from sources like Plato and Cicero. The perspective of the scientific community is also included.