Institutio Oratoria

For judges are not always enlightened and often have to be tricked to prevent them falling into error. Give me philosophers as judges, pack senates and assemblies with philosophers, and you will destroy the power of hatred, influence, prejudice and false witness; consequently there will be very little scope for eloquence whose value will lie almost entirely in its power to charm.

But if, as is

The point, however, that gives rise to the greatest number of these captious accusations against rhetoric, is found in the allegation that orators speak indifferently on either side of a case. From which they draw the following arguments: no art is self-contradictory, but rhetoric does contradict itself; no art tries to demolish what itself has built, but this does happen in the operations of rhetoric; or again:— rhetoric teaches either what ought to be said or what ought not to be said; consequently it is not an art because it teaches what ought not to be said, or because, while it teaches what ought to be said, it also teaches precisely the opposite.