"That 'quickness in turning,' which the poet justly imagines to be essential to fine eyes, betokens in the mind a capacity of passing readily from one thought to another; an agreeable talent, when accompanied with good sense; and just the reverse of sullenness, inattention, and stupidity"
— Beattie, James (1735-1803)
Thou hast no speculation in those eyes
Which thou dost glare with --
says Macbeth to the murdered Banquo. So Spenser, in a passage equal to any thing that ever was written in descriptive poetry:
On every side them stood
The trembling ghosts, with sad amazed mood,
Chattering their iron teeth, and staring wide
With stony eyes.
(II.iv, p. 135)
Beattie, James. Dissertations Moral and Critical. Printed for Strahan, Cadell, and Creech: London, 1783. Facsimile-Reprint: Friedrich Frommann Verlag, Stuttgart-Bad Cannstatt, 1970.