Quo in genere acuminis in primis Iunius Brutus referendus est: nam cum a rege Tarquinio, avunculo suo, omnem nobilitatis indolem excerpi, interque ceteros etiam fratrem suum, quod vegetioris ingenii erat, interfectum animadverteret, obtunsi se cordis esse simulavit, eaque fallacia maximas virtutes suas texit. profectus etiam Delphos cum Tarquinii filiis, quos is ad Apollinem Pythium muneribus et sacrificiis honorandum miserat, aurum deo nomine doni clam cavato baculo inclusum tulit, quia timebat ne sibi caeleste numen aperta liberalitate venerari tutum non esset. peractis deinde mandatis patris, Apollinem iuvenes consuluerunt quisnam ex ipsis Romae regnaturus videretur. at is penes eum summam urbis nostrae potestatem futuram respondit qui ante omnes matri osculum dedisset. tum Brutus, perinde atque casu prolapsus, de industria se abiecit, terramque, communem omnium matrem existimans, osculatus est. quod tam vafre Telluri impressum osculum urbi libertatem, Bruto primum in fastis locum tribuit.
(Valerius Maximus, Facta et Dicta Memorabilia 7.3.2)
In this sort of sharpness Junius Brutus deserves particular mention. He noticed that his uncle king Tarquin was picking out all men of promise among the nobility and that among others his own brother had been put to death because of his lively intelligence. He therefore pretended to be dull of intellect and veiled his great abilities by that deception. Leaving too for Delphi with Tarquin’s sons, whom the king had sent to honour Pythian Apollo with gifts and sacrifices, he took some gold for the god as a gift secretly hidden in a hollow stick, fearing that it would not be safe for him to venerate the heavenly deity with an open donation. After attending to their father’s commissions, the young men consulted Apollo as to which among them seemed likely to be king in Rome. The god replied that supreme power in our city would lie with him who was the first to give his mother a kiss. Then Brutus purposely threw himself on the ground as though by an accidental stumble and kissed it, reckoning it to be the common mother of all kings. That kiss so craftily impressed on Earth gave freedom to the city and the first place in the Fasti to Brutus. (tr. D.R. Shackleton Bailey)