Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
If, in conclusion, we inquire as to the relation of the state itself to its individual members, we find the Roman polity equally remote from the laxity of a mere defensive combination and from the modern idea of an absolute omnipotence of the state. The community doubtless exercised power over the person of the burgess in the imposition of public burdens, and in the punishment of offences and crimes; but any special law inflicting, or threatening to inflict, punishment on an individual on account of acts not universally recognized as penal always appeared to the Romans, even when there was no flaw in point of form, an arbitrary and unjust proceeding.
Far more restricted still was the power of the community in respect of the rights of property and the rights of family which were coincident, rather than merely connected, with these; in Rome the household was not absolutely annihilated and the community aggrandized at its expense, as was the case in the police organization of Lycurgus. It was one of the most undeniable as well as one of the most remarkable principles of the primitive constitution of Rome, that the state might imprison or hang the burgess, but might not take away from him his son or his field or even lay permanent taxation on him.
In these and similar things the community itself was restricted from encroaching on the burgess, nor was this restriction merely ideal; it found its expression and its practical application in the constitutional veto of the senate, which was certainly entitled and bound to annul any resolution of the community contravening such an original right. No community was so all-powerful within its own sphere as the Roman; but in no community did the burgess who conducted himself un-blameably live in an equally absolute security from the risk of encroachment on the part either of his fellow-burgesses or of the state itself.
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Reference address : https://www.ellopos.net/elpenor/rome/1-05-original-constitution-rome.asp?pg=34