Lucretius, De Rerum Natura
William Ellery Leonard, Ed.

     Now come, this wisdom by my sweet toil sought
Look thou perceive, lest haply thou shouldst guess
That the white objects shining to thine eyes
Are gendered of white atoms, or the black
Of a black seed; or yet believe that aught
That's steeped in any hue should take its dye
From bits of matter tinct with hue the same.
For matter's bodies own no hue the least-
Or like to objects or, again, unlike.
But, if percase it seem to thee that mind
Itself can dart no influence of its own
Into these bodies, wide thou wand'rest off.
For since the blind-born, who have ne'er surveyed
The light of sun, yet recognise by touch
Things that from birth had ne'er a hue for them,
'Tis thine to know that bodies can be brought
No less unto the ken of our minds too,
Though yet those bodies with no dye be smeared.
Again, ourselves whatever in the dark
We touch, the same we do not find to be
Tinctured with any colour.
     Now that here
I win the argument, I next will teach
     . . . . . .
Now, every colour changes, none except,
And every...
Which the primordials ought nowise to do.
Since an immutable somewhat must remain,
Lest all things utterly be brought to naught.
For change of anything from out its bounds
Means instant death of that which was before.
Wherefore be mindful not to stain with colour
The seeds of things, lest things return for thee
All utterly to naught.
     But now, if seeds
Receive no property of colour, and yet
Be still endowed with variable forms
From which all kinds of colours they beget
And vary (by reason that ever it matters much
With what seeds, and in what positions joined,
And what the motions that they give and get),
Forthwith most easily thou mayst devise
Why what was black of hue an hour ago
Can of a sudden like the marble gleam,-
As ocean, when the high winds have upheaved
Its level plains, is changed to hoary waves
Of marble whiteness: for, thou mayst declare,
That, when the thing we often see as black
Is in its matter then commixed anew,
Some atoms rearranged, and some withdrawn,
And added some, 'tis seen forthwith to turn
Glowing and white. But if of azure seeds
Consist the level waters of the deep,
They could in nowise whiten: for however
Thou shakest azure seeds, the same can never
Pass into marble hue. But, if the seeds-
Which thus produce the ocean's one pure sheen-
Be now with one hue, now another dyed,
As oft from alien forms and divers shapes
A cube's produced all uniform in shape,
'Twould be but natural, even as in the cube
We see the forms to be dissimilar,
That thus we'd see in brightness of the deep
(Or in whatever one pure sheen thou wilt)
Colours diverse and all dissimilar.
Besides, the unlike shapes don't thwart the least
The whole in being externally a cube;
But differing hues of things do block and keep
The whole from being of one resultant hue.
Then, too, the reason which entices us
At times to attribute colours to the seeds
Falls quite to pieces, since white things are not
Create from white things, nor are black from black,
But evermore they are create from things
Of divers colours. Verily, the white
Will rise more readily, is sooner born
Out of no colour, than of black or aught
Which stands in hostile opposition thus.