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.
GorgiasThe effect of speech upon the condition of the soul is comparable to the power of drugs over the nature of bodies. For just as different drugs dispel different secretions from the body, and some bring an end to disease and others to life, so also in the case of speeches, some distress, others delight, some cause fear, others make the hearers bold, and some drug and bewitch the soul with a kind of evil persuasion.
GorgiasI 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.
GorgiasNothing 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.
Gorgias