Lucretius, De Rerum Natura
William Ellery Leonard, Ed.

     But since I've taught already of what sort
The seeds of all things are, and how distinct
In divers forms they flit of own accord,
Stirred with a motion everlasting on,
And in what mode things be from them create,
And since I've taught what the mind's nature is,
And of what things 'tis with the body knit
And thrives in strength, and by what mode uptorn
That mind returns to its primordials,
Now will I undertake an argument-
One for these matters of supreme concern-
That there exist those somewhats which we call
The images of things: these, like to films
Scaled off the utmost outside of the things,
Flit hither and thither through the atmosphere,
And the same terrify our intellects,
Coming upon us waking or in sleep,
When oft we peer at wonderful strange shapes
And images of people lorn of light,
Which oft have horribly roused us when we lay
In slumber- that haply nevermore may we
Suppose that souls get loose from Acheron,
Or shades go floating in among the living,
Or aught of us is left behind at death,
When body and mind, destroyed together, each
Back to its own primordials goes away.
     And thus I say that effigies of things,
And tenuous shapes from off the things are sent,
From off the utmost outside of the things,
Which are like films or may be named a rind,
Because the image bears like look and form
With whatso body has shed it fluttering forth-
A fact thou mayst, however dull thy wits,