Institutio Oratoria

Aristotle [*](Rhet. I. iii. 3. ) himself also by his tripartite division of oratory, into forensic, deliberative and demonstrative, practically brought everything into the orator's domain, since there is nothing that may not come up for treatment by one of these three kinds of rhetoric.

A very few critics have raised the question as to what may be the instrument of oratory. My definition of an instrument is that without which the material cannot be brought into the shape necessary for the effecting of our object. But it is not the art which requires an instrument, but the artist. Knowledge needs no instruments, for it may be complete although it produces nothing, but the artist must have them. The engraver cannot work without his chisel nor the painter without his brush. I shall therefore defer this question until I come to treat of the orator as distinct from his art.

IN the second book the subject of inquiry was the nature and the end of rhetoric, and I proved to the best of my ability that it was an art, that it was useful, that it was a virtue and that its material was all and every subject that might come up for treatment. I shall now discuss its origin, its component parts, and the method to be adopted in handling and forming our conception of each. For most authors of text-books have stopped short of this, indeed Apollodorus confines himself solely to forensic oratory.

I know that those who asked me to write this work were specially interested in that portion on which I am now entering, and which, owing to the necessity of examining a great diversity of opinions, at once forms by far the most difficult section of this work, and also, I fear, may be the least attractive to my readers, since it necessitates a dry exposition of rules.