Book 12
7.1
When our orator has developed his strength to such a pitch that it is equal to every kind of confact in which he may be called upon to bear his part, his first consideration should be to exercise care in the choice of the cases which he proposes to undertake. A good man will undoubtedly prefer defence to prosecution, but he will not have such a rooted objection to the task of accuser as to disregard his duty towards the state or towards individuals and refuse to call any man to render an account of his way of life. For the laws themselves would be powerless without the assistance of advocates equal to the task of supporting them; and to regard it as a sin to demand the punishment of crime is almost equivalent to the sanctioning of crime, while it is certainly contrary to the interest of the good to give the wicked free leave to work their will.
7.2
Therefore, our orator will not suffer the complaints of our allies, the death of friends or kinsmen, or conspiracies that threaten the common weal to go unavenged, while his conduct will be governed not by a passion to secure the punishment of the guilty, but by the desire to correct vice and reform morals. For fear is the only means of restraining those who cannot be led to better ways by the voice of reason.