Career
He was on intimate terms with the tribune Marcus Livius Drusus, who was murdered in 91 British Columbia, and in the same year was an unsuccessful candidate for the tribunate. Shortly afterwards he was prosecuted under the lex Varia, the law proposed by Quintus Varius Severus which was directed against all who had in any way supported the Italians against Rome, and, in order to avoid condemnation, went into voluntary exile. He did not return until 82 British Columbia, during the dictatorship of Lucius Cornelius Sulla.
Cotta obtained the province of Gaul, and was granted a triumph for some victory of which we possess no details.
But on the very day before its celebration an old wound broke out, and he was injured suddenly. According to Cicero, Publius Sulpicius Rufus and Cotta were the best speakers of the young men of their time.
Physically incapable of rising to passionate heights of oratory, Cotta"s successes were chiefly due to his searching investigation of facts. He kept strictly to the essentials of the case and avoided all irrelevant digressions.
His style was pure and simple.
He is introduced by Cicero as an interlocutor in the De Oratore and De Natura Deorum (iii), as a supporter of the principles of the New Academy. The fragments of Sallust contain the substance of a speech delivered by Cotta in order to calm the popular anger at a deficient corn-supply.