of the nature of things-第24章
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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；
Well learn from this： mainly； because we see
Even 'mongst visible objects many be
That send forth bodies； loosely some diffused…
Like smoke from oaken logs and heat from fires…
And some more interwoven and condensed…
As when the locusts in the summertime
Put off their glossy tunics； or when calves
At birth drop membranes from their body's surface；
Or when； again； the slippery serpent doffs
Its vestments 'mongst the thorns… for oft we see
The breres augmented with their flying spoils：
Since such takes place； 'tis likewise certain too
That tenuous images from things are sent；
From off the utmost outside of the things。
For why those kinds should drop and part from things；
Rather than others tenuous and thin；
No power has man to open mouth to tell；
Especially； since on outsides of things
Are bodies many and minute which could；
In the same order which they had before；
And with the figure of their form preserved；
Be thrown abroad； and much more swiftly too；
Being less subject to impediments；
As few in number and placed along the front。
For truly many things we see discharge
Their stuff at large； not only from their cores
Deep…set within； as we have said above；
But from their surfaces at times no less…
Their very colours too。 And commonly
The awnings； saffron； red and dusky blue；
Stretched overhead in mighty theatres；
Upon their poles and cross…beams fluttering；
Have such an action quite； for there they dye
And make to undulate with their every hue
The circled throng below； and all the stage；
And rich attire in the patrician seats。
And ever the more the theatre's dark walls
Around them shut； the more all things within
Laugh in the bright suffusion of strange glints；
The daylight being withdrawn。 And therefore； since
The canvas hangings thus discharge their dye
From off their surface； things in general must
Likewise their tenuous effigies discharge；
Because in either case they are off…thrown
From off the surface。 So there are indeed
Such certain prints and vestiges of forms
Which flit around； of subtlest texture made；
Invisible； when separate； each and one。
Again； all odour； smoke； and heat； and such
Streams out of things diffusedly； because；
Whilst coming from the deeps of body forth
And rising out； along their bending path
They're torn asunder； nor have gateways straight
Wherethrough to mass themselves and struggle abroad。
But contrariwise； when such a tenuous film
Of outside colour is thrown off； there's naught
Can rend it； since 'tis placed along the front
Ready to hand。 Lastly those images
Which to our eyes in mirrors do appear；
In water； or in any shining surface；
Must be； since furnished with like look of things；
Fashioned from images of things sent out。
There are； then； tenuous effigies of forms；
Like unto them； which no one can divine
When taken singly； which do yet give back；
When by continued and recurrent discharge
Expelled； a picture from the mirrors' plane。
Nor otherwise； it seems； can they be kept
So well conserved that thus be given back
Figures so like each object。
Now then； learn
How tenuous is the nature of an image。
And in the first place； since primordials be
So far beneath our senses； and much less
E'en than those objects which begin to grow
Too small for eyes to note； learn now in few
How nice are the beginnings of all things…
That this； too； I may yet confirm in proof：
First； living creatures are sometimes so small
That even their third part can nowise be seen；
Judge； then； the size of any inward organ…
What of their sphered heart； their eyes； their limbs；
The skeleton？… How tiny thus they are！
And what besides of those first particles
Whence soul and mind must fashioned be？… Seest not
How nice and how minute？ Besides； whatever
Exhales from out its body a sharp smell…
The nauseous absinth； or the panacea；
Strong southernwood； or bitter centaury…
If never so lightly with thy ＇fingers＇ twain
Perchance ＇thou touch＇ a one of them
。 。 。 。 。 。
Then why not rather know that images
Flit hither and thither； many； in many modes；
Bodiless and invisible？
But lest
Haply thou holdest that those images
Which come from objects are the sole that flit；
Others indeed there be of own accord
Begot； self…formed in earth's aery skies；
Which； moulded to innumerable shapes；
Are borne aloft； and； fluid as they are；
Cease not to change appearance and to turn
Into new outlines of all sorts of forms；
As we behold the clouds grow thick on high
And smirch the serene vision of the world；
Stroking the air with motions。 For oft are seen
The giants' faces flying far along
And trailing a spread of shadow； and at times
The mighty mountains and mountain…sundered rocks
Going before and crossing on the sun；
Whereafter a monstrous beast dragging amain
And leading in the other thunderheads。
Now ＇hear＇ how easy and how swift they be
Engendered； and perpetually flow off
From things and gliding pass away。。。。
。 。 。 。 。 。
For ever every outside streams away
From off all objects； since discharge they may；
And when this outside reaches other things；
As chiefly glass； it passes through； but where
It reaches the rough rocks or stuff of wood；
There 'tis so rent that it cannot give back
An image。 But when gleaming objects dense；
As chiefly mirrors； have been set before it；
Nothing of this sort happens。 For it can't
Go； as through glass； nor yet be rent… its safety；
By virtue of that smoothness； being sure。
'Tis therefore that from them the images
Stream back to us； and howso suddenly
Thou place； at any instant； anything
Before a mirror； there an image shows；
Proving that ever from a body's surface
Flow off thin textures and thin shapes of things。
Thus many images in little time
Are gendered； so their origin is named
Rightly a speedy。 And even as the sun
Must send below； in little time； to earth
So many beams to keep all things so full
Of light incessant； thus； on grounds the same；
From things there must be borne； in many modes；
To every quarter round； upon the moment；
The many images of things； because
Unto whatever face of things we turn
The mirror； things of form and hue the same
Respond。 Besides； though but a moment since
Serenest was the weather of the sky；
So fiercely sudden is it foully thick
That ye might think that round about all murk
Had parted forth from Acheron and filled
The mighty vaults of sky… so grievously；
As gathers thus the storm…clouds' gruesome night；
Do faces of black horror hang on high…
Of which how small a part an image is
There's none to tell or reckon out in words。
Now come； with what swift motion they are borne；
These images； and what the speed assigned
To them across the breezes swimming on…
So that o'er lengths of space a little hour
Alone is wasted； toward whatever region
Each with its divers impulse tends… I'll tell
In verses sweeter than they many are；
Even as the swan's slight note is better far
Than that dispersed clamour of the cranes
Among the southwind's aery clouds。 And first；
One oft may see that objects which are light
And made of tiny bodies are the swift；
In which class is the sun's light and his heat；
Since made from small primordial elements
Which； as it were； are forward knocked along
And through the interspaces of the air
To pass
