Institutio Oratoria

For, if we judge aright, there is no greater benefit that we can confer on our clients than this, that we should not cheat them by giving them empty hopes of success. On the other hand, no client that does not take his advocate into his counsel deserves that advocate's assistance, and it is certainly unworthy of our ideal orator that he should wittingly defend injustice. For if he is led to defend what is false by any of the motives which I mentioned above, [*](XII. i. 36.) his own action will still be honourable.