Lucretius, De Rerum Natura
William Ellery Leonard, Ed.

     Besides,
Since special shapes have not a special colour,
And all formations of the primal germs
Can be of any sheen thou wilt, why, then,
Are not those objects which are of them made
Suffused, each kind with colours of every kind?
For then 'twere meet that ravens, as they fly,
Should dartle from white pinions a white sheen,
Or swans turn black from seed of black, or be
Of any single varied dye thou wilt.
     Again, the more an object's rent to bits,
The more thou see its colour fade away
Little by little till 'tis quite extinct;
As happens when the gaudy linen's picked
Shred after shred away: the purple there,
Phoenician red, most brilliant of all dyes,
Is lost asunder, ravelled thread by thread;
Hence canst perceive the fragments die away
From out their colour, long ere they depart
Back to the old primordials of things.
And, last, since thou concedest not all bodies
Send out a voice or smell, it happens thus
That not to all thou givest sounds and smells.
So, too, since we behold not all with eyes,
'Tis thine to know some things there are as much
Orphaned of colour, as others without smell,
And reft of sound; and those the mind alert
No less can apprehend than it can mark
The things that lack some other qualities.