They are so knowing, that they know nothing.

Terence (190 BCE-159 BCE), Publius Terentius Afer better known in English as Terence was a Roman African playwright during the Roman Republic. His comedies were performed for the first time around 166–160 BC. Terentius Lucanus, a Roman senator, brought Terence to Rome as a slave, educated him and later on, impressed by his abilities, freed him.