
From dark recesses things that stand in light,
Because, when first has entered and possessed
The open eyes this nearer darkling air,

Swiftly the shining air and luminous
Followeth in, which purges then the eyes
And scatters asunder of that other air
The sable shadows, for in large degrees

This air is nimbler, nicer, and more strong.
And soon as ever ‘thas filled and oped with light
The pathways of the eyeballs, which before
Black air had blocked, there follow straightaway

Those films of things out-standing in the light,
Provoking vision- what we cannot do
From out the light with objects in the dark,

Because that denser darkling air behind
Followeth in, and fills each aperture
And thus blockades the pathways of the eyes
That there no images of any things
Can be thrown in and agitate the eyes.
Lucretius, De Rerum Natura, Book IV