De Rerum Natura

Of bones, blood, veins, heat, moisture, flesh, and thews-

All differing vastly in their forms, and built

Of elements dissimilar in shape.

Again, all things by fire consumed ablaze,

Within their frame lay up, if naught besides,

At least those atoms whence derives their power

To throw forth fire and send out light from under,

To shoot the sparks and scatter embers wide.

If, with like reasoning of mind, all else

Thou traverse through, thou wilt discover thus

That in their frame the seeds of many things

They hide, and divers shapes of seeds contain.

Further, thou markest much, to which are given

Along together colour and flavour and smell,

Among which, chief, are most burnt offerings.

. . . . . .

Thus must they be of divers shapes composed.

A smell of scorching enters in our frame

Where the bright colour from the dye goes not;

And colour in one way, flavour in quite another

Works inward to our senses- so mayst see

They differ too in elemental shapes.

Thus unlike forms into one mass combine,

And things exist by intermixed seed.

But still 'tmust not be thought that in all ways

All things can be conjoined; for then wouldst view

Portents begot about thee every side:

Hulks of mankind half brute astarting up,

At times big branches sprouting from man's trunk,

Limbs of a sea-beast to a land-beast knit,

And nature along the all-producing earth

Feeding those dire Chimaeras breathing flame

From hideous jaws- Of which 'tis simple fact

That none have been begot; because we see

All are from fixed seed and fixed dam

Engendered and so function as to keep

Throughout their growth their own ancestral type.

This happens surely by a fixed law:

For from all food-stuff, when once eaten down,

Go sundered atoms, suited to each creature,

Throughout their bodies, and, conjoining there,

Produce the proper motions; but we see

How, contrariwise, nature upon the ground

Throws off those foreign to their frame; and many

With viewless bodies from their bodies fly,

By blows impelled- those impotent to join

To any part, or, when inside, to accord

And to take on the vital motions there.

But think not, haply, living forms alone

Are bound by these laws: they distinguished all.

. . . . . .

For just as all things of creation are,

In their whole nature, each to each unlike,

So must their atoms be in shape unlike-

Not since few only are fashioned of like form,

But since they all, as general rule, are not

The same as all. Nay, here in these our verses,

Elements many, common to many words,

Thou seest, though yet 'tis needful to confess

The words and verses differ, each from each,

Compounded out of different elements-

Not since few only, as common letters, run

Through all the words, or no two words are made,

One and the other, from all like elements,

But since they all, as general rule, are not

The same as all. Thus, too, in other things,

Whilst many germs common to many things

There are, yet they, combined among themselves,

Can form new wholes to others quite unlike.

Thus fairly one may say that humankind,

The grains, the gladsome trees, are all made up

Of different atoms. Further, since the seeds

Are different, difference must there also be

In intervening spaces, thoroughfares,

Connections, weights, blows, clashings, motions, all

Which not alone distinguish living forms,

But sunder earth's whole ocean from the lands,

And hold all heaven from the lands away.

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