Question: Who said of Greece, "Graecia capta ferum victorem cepit"?
About the article "Greece", section "Hellenistic and Roman periods (323 BC–4th century AD)".

Candidate passages:
The literate upper classes of Rome were increasingly Hellenized in their culture during the 3rd century BC.
Among Romans the career of Titus Quinctius Flamininus (died 174 BC), who appeared at the Isthmian Games in Corinth in 196 BC and proclaimed the freedom of the Greek states, was fluent in Greek, stood out, according to Livy, as a great admirer of Greek culture; the Greeks hailed him as their liberator.
There were however, some Romans during the late Republic, who were distinctly anti-Greek, resenting the increasing influence of Greek culture on Roman life, an example being the Roman Censor, Cato the ElderThe lyric poet Quintus Horatius Flaccus was another philhellene.
It is notable his phrase ""Graecia capta ferum victorem cepit et artis intulit agresti Latio"" (Conquered Greece took captive her savage conqueror and brought her arts into rustic Latium).
Roman emperors known for their philhellenism include Nero, Hadrian, Marcus Aurelius and Julian the Apostate. 
The civilization of ancient Greece has been immensely influential on language, politics, educational systems, philosophy, science, and the arts.
It became the "Leitkultur" of the Roman Empire to the point of marginalizing native Italic traditions.
As Horace put it, "Graecia capta ferum victorem cepit et artes / intulit agresti Latio" ("Epistulae" 2.1.156f.)
"Captive Greece took captive her fierce conqueror and instilled her arts in rustic Latium."
Via the Roman Empire, Greek culture came to be foundational to Western culture in general.
The Byzantine Empire inherited Classical Greek culture directly, without Latin intermediation, and the preservation of classical Greek learning in medieval Byzantine tradition further exerted strong influence on the Slavs and later on the Islamic Golden Age and the Western European Renaissance.
A modern revival of Classical Greek learning took place in the Neoclassicism movement in 18th- and 19th-century Europe and the Americas. 
Following the time of the conquest of the last of the independent Greek city-states and Hellenistic (post-Alexandrine) kingdoms, almost all of the world's Greek speakers lived as citizens or subjects of the Roman Empire.
Despite their military superiority, the Romans admired and became heavily influenced by the achievements of Greek culture, hence Horace's famous statement: "Graecia capta ferum victorem cepit" ("Greece, although captured, took its wild conqueror captive").
In the religious sphere, this was a period of profound change.
The spiritual revolution that took place, saw a waning of the old Greek religion, whose decline beginning in the 3rd century BC continued with the introduction of new religious movements from the East.
The cults of deities like Isis and Mithra were introduced into the Greek world.
Greek-speaking communities of the Hellenized East were instrumental in the spread of early Christianity in the 2nd and 3rd centuries, and Christianity's early leaders and writers (notably St Paul) were generally Greek-speaking, though none were from Greece.
However, Greece itself had a tendency to cling to paganism and was not one of the influential centers of early Christianity: in fact, some ancient Greek religious practices remained in vogue until the end of the 4th century, with some areas such as the southeastern Peloponnese remaining pagan until well into the 10th century AD. 
Roman Greece is the period of Greek history (of Greece proper; as opposed to the other centers of Hellenism in the Roman world) following the Roman victory over the Corinthians at the Battle of Corinth in 146 BC until the reestablishment of the city of Byzantium and the naming of the city by the Emperor Constantine as the capital of the Roman Empire (as Nova Roma, later Constantinople) in 330 AD.
The Greek peninsula came under Roman rule in 146 BC, Macedonia being a Roman province, while southern Greece came under the surveillance of Macedonia's praefect.
However, some Greek poleis managed to maintain a partial independence and avoid taxation.
The Aegean islands were added to this territory in 133 BC.
Athens and other Greek cities revolted in 88 BC, and the peninsula was crushed by the Roman general Sulla.
The Roman civil wars devastated the land even further, until Augustus organized the peninsula as the province of Achaea in 27 BC.
Greece was the key eastern province of the Roman Empire, as the Roman culture had long been in fact Greco-Roman.
The Greek language served as a lingua franca in the East and in Italy, and many Greek intellectuals such as Galen would perform most of their work in Rome.
Several emperors contributed new buildings to Greek cities, especially in the Athenian agora, where the Agrippeia of Marcus Vipsanius Agrippa, the Library of Titus Flavius Pantaenus, and the Tower of the Winds, among others, were built.
Life in Greece continued under the Roman Empire much the same as it had previously.
Roman culture was highly influenced by the Greeks; as Horace said, "Graecia capta ferum victorem cepit".
(Translation: "Captive Greece captured her rude conqueror".)
The epics of Homer inspired the Aeneid of Virgil, and authors such as Seneca the younger wrote using Greek styles.
The Roman nobles, who regarded the Greeks as backwards and petty, were the main political opponents of Roman heroes such as Scipio Africanus, who tended to study philosophy and regard Greek culture and science as an example to be followed.
Similarly, most Roman emperors maintained an admiration for things Greek in nature.
The Roman Emperor Nero visited Greece in 66 AD, and performed at the Ancient Olympic Games, despite the rules against non-Greek participation.
He was, of course, honoured with a victory in every contest, and in 67 AD he proclaimed the freedom of the Greeks at the Isthmian Games in Corinth, just as Flamininus had over 200 years previously.
Hadrian was also particularly fond of the Greeks; before he became emperor he served as an eponymous archon of Athens.
He also built his Arch of Hadrian there.
At the same time Greece and much of the rest of the Roman east came under the influence of Early Christianity.
The apostle Paul of Tarsus had preached in Macedon and Athens, and Greece soon became one of the most highly Christianized areas of the empire. 
Hellenistic and Roman periods (323 BC–4th century AD).
After a period of confusion following Alexander's death, the Antigonid dynasty, descended from one of Alexander's generals, established its control over Macedon by 276 BC, as well as hegemony over most of the Greek city-states.
From about 200 BC the Roman Republic became increasingly involved in Greek affairs and engaged in a series of wars with Macedon.
Macedon's defeat at the Battle of Pydna in 168 BC signaled the end of Antigonid power in Greece.
In 146 BC Macedonia was annexed as a province by Rome, and the rest of Greece became a Roman protectorate.
The process was completed in 27 BC when the Roman Emperor Augustus annexed the rest of Greece and constituted it as the senatorial province of Achaea.
Despite their military superiority, the Romans admired and became heavily influenced by the achievements of Greek culture, hence Horace's famous statement: "Graecia capta ferum victorem cepit" ("Greece, although captured, took its wild conqueror captive").
Greek science, technology and mathematics are generally considered to have reached their peak during the Hellenistic period.
Greek-speaking communities of the Hellenized East were instrumental in the spread of early Christianity in the 2nd and 3rd centuries, and Christianity's early leaders and writers (notably St Paul) were generally Greek-speaking, though none were from Greece.
Greece itself had a tendency to cling on to paganism and was not one of the influential centers of early Christianity: in fact, some ancient Greek religious practices remained in vogue until the end of the 4th century, with some areas such as the southeastern Peloponnese remaining pagan until well into the 10th century AD.