Origen 'Contra Celcus'

When false witnesses testified against our Lord and Saviour Jesus Christ, He remained silent; and when unfounded charges were brought against Him, He returned no answer, believing that His whole life and conduct among the Jews were a better refutation than any answer to the false testimony, or than any formal defence against the accusations. And I know not, my pious Ambrosius, why you wished me to write a reply to the false charges brought by Celsus against the Christians, and to his accusations directed against the faith of the Churches in his treatise; as if the facts themselves did not furnish a manifest refutation, and the doctrine a better answer than any writing, seeing it both disposes of the false statements, and does not leave to the accusations any credibility or validity.