Institutio Oratoria

For my own part, and I have authority to support me, I hold that the material of rhetoric is composed of everything that may be placed before it as a subject for speech. Plato, if I read him aright, makes Socrates [*](Gorg. 449 E. ) say to Gorgias that its material is to be

found in things not words; while in the Phaedrus [*](Phaedr. 261 A. ) he clearly proves that rhetoric is concerned not merely with law-courts and public assemblies, but with private and domestic affairs as well: from which it is obvious that this was the view of Plato himself.

Cicero also in a passage [*](de Inv. i. 5. ) of one of his works, states that the material of rhetoric is composed of the things which are brought before it, but makes certain restrictions as to the nature of these things. In another passage, [*](de Or. I. vi. 21. I will not demand omniscience from an orator, although etc. ) however, he expresses his opinion that the orator has to speak about all kinds of things; I will quote his actual words:

although the very meaning of the name of orator and the fact that he professes to speak well seem to imply a promise and undertaking that the orator will speak with elegance and fullness on any subject that may be put before him.

And in another passage [*](ib. iii. xiv. 54. ) he says,

It is the duty of the true orator to seek out, hear, read, discuss, handle and ponder everything that befalls in the life of man, since it is with this that the orator is concerned and this that forms the material with which he has to deal.