Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
But close consideration of the nature of the subject leads me to think that in this connexion it is not so much morals in general that is meant as certain peculiar aspects; for the term morals includes every attitude of the mind. The more cautious writers have preferred to give the sense of the term rather than to translate it into Latin. They therefore explain pathos
Some add that ethos is continuous, while pathos is momentary. While admitting that this is usually the ease, I still hold that there are some subjects which demand that the more violent emotion should be continuous. But, although the gentler emotions require less force and impetus, they call for no less art and experience than the more vehement, and are demanded in a greater number of cases, indeed in a certain sense they are required in all.
For as everything treated by the orator may be regarded from the ethical standpoint, we may apply the word ethos whenever he speaks of what is honourable and expedient or of what ought or ought not to be done. Some regard commendation and excuse as the peculiar spheres of ethos, but while I admit that they do fall within its sphere, I do not regard them as being alone in so doing.
Indeed I would add that pathos and ethos are sometimes of the same nature, differing only in degree; love for instance comes under the head of pathos, affection of ethos; sometimes however they differ, a distinction which is important for the peroration, since ethos is generally employed to calm the storm aroused by pathos. I ought however to explain what is meant by ethos in greater detail, since the term is not in itself sufficiently expressive of its meaning.
The ethos which I have in my mind and which I desiderate in an orator is commended to our approval by goodness more than aught else and is not merely calm and mild, but in most cases