I answer, Socrates, that rhetoric is the art of persuasion in courts of law and other assemblies, as I was just now saying, and about the just and unjust.

The man who deceives shows more justice than he who does not.

Man and woman and speech and deed and city and object should be honored with praise if praiseworthy and incur blame if unworthy, for it is an equal error and mistake to blame the praisable and to praise the blamable.

Speech is a powerful master and achieves the most divine feats with the smallest and least evident body. It can stop fear, relieve pain, create joy, and increase pity.

Being is unrecognizable unless it manages to seem, and seeming is feeble unless it manages to be.

Nothing exists; even if something exists, nothing can be known about it; and even if something can be known about it, knowledge about it can’t be communicated to others.

Nothing exists, though if it did exist, it could not be known, but even if it could be known, it could not be communicated, and, if it could be communicated, it could not be understood. - Gorgias, On Nature or the Non-Existent

And if persuasive discourse deceived her soul, it is not on that account difficult to defend her and absolve her of responsibility, thus: discourse is a great potentate, which by the smallest and most secret body accomplishes the most divine works; for it can stop fear and assuage pain and produce joy and make mercy abound.

Nothing exists; even if something exists, nothing can be known about it; and even if something can be known about it, knowledge about it can't be communicated to others.