E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Pilate said, What is truth? This was the great question of the Platonists. Plato said we could know truth if we could sublimate our minds to their original purity. Arcesilaos said that mans understanding is not capable of knowing what truth is. Carneads maintained that not only our understanding could not comprehend it, but even our senses are wholly inadequate to help us in the investigation. Gorgias the Sophist said, What is right but what we prove to be right? and what is truth but what we believe to be truth?