One of the four statues of the virtues in the niches of the Library of Celsus facade.
The Library of Celsus was built around 110-135 CE by the consul Tiberius Julius Aquila as a monumental tomb and library for his father, Tiberius Julius Celsus Polemaeanus, governor of Asia, who was buried in a sarcophagus beneath the building. It held around 12,000 scrolls. The niches of its two-story facade contain statues personifying the virtues of Celsus: Sophia (wisdom), Arete (virtue), Ennoia (thought) and Episteme (knowledge). The statues seen at the site today are casts; the originals are in the Ephesos Museum in Vienna.