De Rerum Natura

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Some atoms rearranged, and some withdrawn,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.

Besides, since colours cannot be, sans light,

And the primordials come not forth to light,

'Tis thine to know they are not clothed with colour-

Truly, what kind of colour could there be

In the viewless dark? Nay, in the light itself

A colour changes, gleaming variedly,

When smote by vertical or slanting ray.

Thus in the sunlight shows the down of doves

That circles, garlanding, the nape and throat:

Now it is ruddy with a bright gold-bronze,

Now, by a strange sensation it becomes

Green-emerald blended with the coral-red.

The peacock's tail, filled with the copious light,

Changes its colours likewise, when it turns.

Wherefore, since by some blow of light begot,

Without such blow these colours can't become.

And since the pupil of the eye receives

Within itself one kind of blow, when said

To feel a white hue, then another kind,

When feeling a black or any other hue,

And since it matters nothing with what hue

The things thou touchest be perchance endowed,

But rather with what sort of shape equipped,

'Tis thine to know the atoms need not colour,

But render forth sensations, as of touch,

That vary with their varied forms.

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