Institutio Oratoria

I think that enough has been said on the subject of invention. For I have dealt not merely with the methods by which we may instruct the judge, but also with the means of appealing to his emotions. But just as it is not sufficient for those who are erecting a building merely to collect stone and timber and other building materials, but skilled masons are required to arrange and place them, so in speaking, however abundant the matter may be, it will merely form a confused heap unless arrangement be employed to reduce it to order and to give it connexion and firmness of structure.