...the rituals and divine utterances of Apollo's oracle at Delphi were subjects recorded and commented upon by numerous ancient writers through the centuries, including Pliny the Elder, Diodorus Siculus, Plato, Aeschylus, Cicero, Strabo and Plutarch, a Boeotian native who gained fame in late 1st century AD Rome for his essays and biographies, provides a firsthand account of the oracle at Delphi. As a senior priest who long served in the sanctuary, Plutarch recorded detailed observations of the Pythian priestess's trance-like, occasionally erratic behavior during sacred rituals... a multidisciplinary team of specialists in the late 20th century uncovered tangible proof that...