DO NOT ABUSE YOUR OPPONENT
Some are very liberal in abuse of the advocate of the opposing party, but unless he has brought it upon himself, I think it is acting very ungenerously by him, in consideration of the common duties of the profession. Add to this that these sallies of passion are of no advantage whatever to him who pleads, the opponent having, in his turn, an equal right to abuse; and they may even be harmful to the cause, because the opponent, spurred on to become a real enemy, musters together all the forces of wit to conquer if possible. Above all, that modesty is irrecoverably lost which procures for the orator so much authority and belief, if once departing from the character of a good man, he degenerates into a brawler and barker, conforming himself not to the disposition of the judge, but to the caprice and resentment of the client.
Taking liberties of this kind frequently leads the orator to hazard some rash expressions not less dangerous to the cause than to himself. Pericles was accustomed to wish, with good reason, that no word might ever enter his mind which could give umbrage to the people. But the respect he had for the people ought in my opinion to be had for all, who may have it in their power to do as much hurt; for the words that seemed strong and bold when exprest, are called foolish when they have given offense.