[Gaius libro primo ad legem duodecim tabularum. ] §1.2.1.prFacturus legum uetustarum interpretationem necessario prius ab urbis initiis repetendum existimaui, non quia uelim uerbosos commentarios facere, sed quod in omnibus rebus animaduerto id perfectum esse, quod ex omnibus suis partibus constaret: et certe cuiusque rei potissima pars principium est.
[Gaius in the first book on the Law of the Twelve Tables.] As I am about to write an interpretation of the ancient laws, I thought it necessary first to trace back from the beginnings of the city; not because I wish to write verbose commentaries, but because I notice in all things that that is perfect which consists of all its parts: and certainly the most important part of any thing is its beginning.
deinde si in foro causas dicentibus nefas ut ita dixerim uidetur esse nulla praefatione facta iudici rem exponere: quanto magis interpretationem promittentibus inconueniens erit omissis initiis atque origine non repetita atque illotis ut ita dixerim manibus protinus materiam interpretationis tractare? namque nisi fallor istae praefationes et libentius nos ad lectionem propositae materiae producunt et cum ibi uenerimus, euidentiorem praestant intellectum.
Next, if it is seen as almost a sacrilege, so to speak, for those pleading cases in the forum to lay the matter before the judge without making any introduction: how much more unsuitable will it be for those who promise an interpretation, if they, omitting the beginnings and not tracing the origin, and with—so to speak—unwashed hands, immediately handle the material of interpretation? For unless I am mistaken, these introductions both lead us more willingly to the reading of the proposed material, and, when we arrive there, provide a clearer understanding.