Optimate in the context of "Constitution of the Roman Republic"

Marcus Tullius Cicero (/ˈsɪsəroʊ/ SISS-ə-roh; Latin: [ˈmaːrkʊs ˈtʊlli.ʊs ˈkɪkɛroː]; 3 January 106 BC – 7 December 43 BC) was a Roman statesman, lawyer, scholar, philosopher, orator, writer and Academic skeptic, who tried to uphold optimate principles during the political crises that led to the establishment of the Roman Empire. His extensive writings include treatises on rhetoric, philosophy and politics. He is considered one of Rome's greatest orators and prose stylists and the innovator of what became known as "Ciceronian rhetoric". Cicero was educated in Rome and in Greece. He came from a wealthy municipal family of the Roman equestrian order, and served as consul in 63 BC.

He greatly influenced both ancient and modern reception of the Latin language. A substantial part of his work has survived, and he was admired by both ancient and modern authors alike. Cicero adapted the arguments of the chief schools of Hellenistic philosophy in Latin and coined a large portion of Latin philosophical vocabulary via lexical innovation (e.g. neologisms such as evidentia, generator, humanitas, infinitio, qualitas, quantitas), almost 150 of which were the result of translating Greek philosophical terms.

The Bellum Siculum (Latin for "Sicilian War") was an Ancient Roman civil war waged between 42 BC and 36 BC by the forces of the Second Triumvirate and Sextus Pompey, the last surviving son of Pompey the Great and the last leader of the Optimate faction. The war consisted of mostly a number of naval engagements throughout the Mediterranean Sea and a land campaign primarily in Sicily that eventually ended in a victory for the Triumvirate and Sextus Pompey's death. The conflict is notable as the last stand of any organised opposition to the Triumvirate.

The result of the war settled the question whether the political ascendancy of the autocratic Triumvirs could be reversed, ending all hopes for the restoration of the constitutional government of the Roman Republic. The war however also led to the breakdown of the Triumvirate itself since Octavian was able to take advantage of discontent in Lepidus' camp to sideline his partner, leaving Octavian and Mark Antony as only rulers of the Roman world and setting the stage for the War of Actium.

Quintus Hortensius Hortalus (114–50 BC) was a Roman lawyer, an orator and a statesman. Politically he belonged to the Optimates. He was consul in 69 BC alongside Quintus Caecilius Metellus Creticus. His nickname was Dionysia, after a famous actress. After his retirement Hortensius took up fish-breeding as a hobby. Cicero spoke of him as a Piscinarius – 'fish fancier'.