Institutio Oratoria

Laws which are either written or founded on accepted custom present no difficulty, since they call merely for knowledge and make no demand on the imagination. On the other hand, the points explained in the rulings of the legal experts turn either on the interpretation of words or on the distinction between right and wrong. To understand the meaning of each word is either common to all sensible men or the special possession of the orator, while the demands of equity are known to every good man.