Cornelius Nepos in the context of "Thyus"

Pythia (/ˈpɪθiə/; Ancient Greek: Πυθία [pyːˈtʰíaː]) was the title of the high priestess of the Temple of Apollo at Delphi in central Greece. She served as its oracle and was known as the Oracle of Delphi. Her title was sometimes historically glossed in English as the Pythoness.

The Pythia was established at the latest in the 8th century BC (though some estimates date the shrine to as early as 1400 BC), and was widely credited for her prophecies uttered under divine possession (enthusiasmos) by Apollo. The Pythian priestess emerged as pre-eminent by the end of the 7th century BC and continued to be consulted until the late 4th century AD. During this period, the Delphic Oracle was the most prestigious and authoritative oracle among the Greeks, and she was among the most powerful women of the classical world. The oracle is one of the best-documented religious institutions of the classical Greeks. Authors who mention the oracle include Aeschylus, Aristotle, Clement of Alexandria, Diodorus, Diogenes, Euripides, Herodotus, Julian, Justin, Livy, Lucan, Nepos, Ovid, Pausanias, Pindar, Plato, Plutarch, Sophocles, Strabo, Thucydides, and Xenophon.

Iphicrates (Ancient Greek: Ιφικράτης; c. 418 – c. 353 BC) was an Athenian general, who flourished in the earlier half of the 4th century BC. He is credited with important infantry reforms that revolutionized ancient Greek warfare by regularizing light-armed peltasts.

Cornelius Nepos wrote that Iphicrates was such a leader, that he was not only comparable to the first commanders of his own time, but no one even of the older generals could be set above him. He had a deep knowledge of military tactics, he often had the command of armies and he never miscarried in an undertaking by his own fault. He was always eminent for invention and excellence that he not only introduced much that was new into the military art, but made many improvements in what existed before.

The writings of Marcus Tullius Cicero constitute one of the most renowned collections of historical and philosophical work in all of classical antiquity. Cicero was a Roman politician, lawyer, orator, political theorist, philosopher, and constitutionalist who lived during the years of 106–43 BC. He held the positions of Roman senator and Roman consul (chief-magistrate) and played a critical role in the transformation of the Roman Republic into the Roman Empire. He was extant during the rule of prominent Roman politicians, such as those of Julius Caesar, Pompey, and Marc Antony. Cicero is widely considered one of Rome's greatest orators and prose stylists.

Cicero is generally held to be one of the most versatile minds of ancient Rome. He introduced the Romans to the chief schools of Greek philosophy, and also created a Latin philosophical vocabulary; distinguishing himself as a linguist, translator, and philosopher. A distinguished orator and successful lawyer, Cicero likely valued his political career as his most important achievement. Today he is appreciated primarily for his humanism and philosophical and political writings. His voluminous correspondence, much of it addressed to his friend Atticus, has been especially influential, introducing the art of refined letter writing to European culture. Cornelius Nepos, the 1st-century BC biographer of Atticus, remarked that Cicero's letters to Atticus contained such a wealth of detail "concerning the inclinations of leading men, the faults of the generals, and the revolutions in the government" that their reader had little need for a history of the period.

Titus Pomponius Atticus (November 110 BC – 31 March 32 BC; later named Quintus Caecilius Pomponianus Atticus) was a Roman editor, banker, and literary patron, best known for his correspondence and close friendship with the famous Roman statesman Marcus Tullius Cicero. Atticus was from a wealthy family of the equestrian class and had close ties to many other Roman aristocrats, most prominently Cicero.

Cicero considered Atticus his dearest friend, and frequently turned to him for advice on personal, political, and literary matters. As a testament to their relationship, Cicero dedicated his treatise on friendship, de Amicitia, to Atticus. Their correspondence, often written in subtle code to disguise their political observations, is preserved in Epistulae ad Atticum (Letters to Atticus) compiled by Tiro, Cicero's slave (later his freedman) and personal secretary. In addition to the Ciceronian correspondence, a key source for the life of Atticus is a biography written by the Roman historian Cornelius Nepos.