Sibylline Books in the context of "Gaius Licinius Stolo"

Lucius Sextius Sextinus Lateranus was a Roman tribune of the plebs and is noted for having been one of two men (the other being Gaius Licinius Stolo) who passed the Leges Liciniae Sextiae of 368 BC and 367 BC. Originally, these were a set of three laws. One law provided that the interest already paid on debts should be deducted from the principal and that the payment of the rest of the principal should be in three equal annual installments. Another one provided restricted individual ownership of public land in excess of 500 iugeras (300 acres) and forbade the grazing of more than 100 cattle on public land. The most important law provided that one of the two consuls be a plebeian. Having been reelected nine times, Lucius Sextius Lateranus and Gaius Licinius Stolo held the plebeian tribunate for ten years. In 368 BC the laws regarding debt and land were passed, but the law regarding the consulship was rejected. In 367 BC this law was passed. In the same year the two tribunes of the plebs proposed a fourth law concerning the priests who were the custodians of the sacred Sibylline Books, and Lucius Sextius Lateranus was elected to serve as consul for the year 366 BC. Livy wrote that he was "the first of the plebeians to attain that honour."

The Licinio-Sextian rogations were a series of laws proposed by tribunes of the plebs, Gaius Licinius Stolo and Lucius Sextius Lateranus, enacted around 367 BC. Livy calls them rogatio – though he does refer to them at times as lex – as the plebeian assembly did not at the time have the power to enact leges (laws).

These laws provided for a limit on the interest rate of loans and a restriction on private ownership of land. A third law, which provided for one of the two consuls to be a plebeian, was rejected. Two of these laws were passed in 368 BC, after the two proponents had been elected and re-elected tribunes for nine consecutive years and had successfully prevented the election of patrician magistrates for five years (375–370 BC). In 367 BC, during their tenth tribunate, this law was passed. In the same year they also proposed a fourth law regarding the priests who were the custodians of the sacred Sibylline Books.

In ancient Rome, the quindecimviri sacris faciundis were the fifteen (quindecim) members of a college (collegium) with priestly duties. They guarded the Sibylline Books, scriptures which they consulted and interpreted at the request of the Senate. This collegium also oversaw the worship of any foreign gods which were introduced to Rome. They were also responsible for responding to divine advice and omens.

Originally these duties had been performed by duumviri (or duoviri), two men of patrician status. Their number was increased to ten by the Licinian-Sextian Law in 367 BC, which also required for half of the priests to be plebeian. During the Middle Republic, members of the college were admitted through co-option. Sulla increased the number of priests to fifteen. The Lex Domitia removed their ability to select their own members in 104 BCE. Afterwards candidates from wealthy Roman gentes would be elected.

The Library of Palatine Apollo (Latin: Bibliotheca Apollinis Palatini) was a public library established by the Roman Emperor Augustus. It was located at the portico of the Temple of Apollo Palatinus and consisted of two halls, one for Greek and one for Latin books. The walls of the library included medallion portraits of famous writers, and the space was large enough for Augustus to hold meetings of the senate. When Augustus assumed the office of pontifex maximus, he moved the Sibylline Books from the Temple of Jupiter Capitolinus to the Palatine Apollo. Gaius Julius Hyginus, a freedman of Augustus and accomplished grammarian, was the director of the library.

Exclusion from the library definitively signaled an author’s rejection.