Institutio Oratoria

Quintilian

Quintilian. Institutio Oratoria, Volume 1-4. Butler, Harold Edgeworth, translator. Cambridge, Mass; London: Harvard University Press, William Heinemann Ltd., 1920-1922.

The eyebrows also may be used with great effect. For to some extent they mould the expression of the eyes and

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determine that of the forehead. It is by means of the eyebrows that we contract, raise or smooth the latter: in fact, the only thing which has greater influence over it is the blood, which moves in conformity with the emotions that control the mind, causing a blush on a skin that is sensitive to shame, and giving place to an icy pallor under the influence of fear, whereas, when it is under control, it produces a peaceful complexion, intermediate between the two.

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.