' The Effects of Speech '...

The 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. ....................... Gorgias