Institutio Oratoria
Quintilian
Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.
In comedy, on the other hand, over and above the methods adopted to distinguish between slaves, pimps, parasites, rustics, soldiers, harlots, maidservants, old men stern and mild, youths moral or luxurious, married women and girls, we have the important rôle of the father who, because at times he is excited and at others call, has one eyebrow raised and the other normal, the custom among actors being to turn that side of the face to the audience which best suits the role.
But of the various elements that go to form the expression, the eyes are the most important, since they, more than any-thing else, reveal the temper of the mind, and without actual movement will twinkle with merriment or be clouded with grief. And further, nature has given them tears to serve as interpreters of our feelings, tears that will break forth for sorrow or stream for very joy. But, when the eyes move, they become intent, indifferent, proud, fierce, mild, or angry; and they will assume all these characters according as the pleading may demand.
But they must never he fixed or protruding, languid or sluggish, lifeless, lascivious, restless, nor swim with a moist voluptuous glance, nor look aslant nor leer in amorous fashion, nor yet must they seem to promise or ask a boon. As for keeping them fully or partially closed while speaking, surely none save an uneducated man or a fool would dream of doing such a thing.
And in addition to all these forms of expression, the upper and lower eyelids can render service in support of the eyes.
The eyebrows also may be used with great effect. For to some extent they mould the expression of the eyes and
Complete immobility in the eyebrows is a fault, as also is excess of mobility or the tendency to raise one and lower the other, as in the comic mask which I mentioned just now: while it is a further blemish if they express a feeling out of keeping with the words we utter. For they show anger by contraction, grief by depression and cheerfulness by their expansion. They are also dropped or raised to express consent or refusal respectively.