De Rerum Natura

Of which yet one must be the cause even here

Which maketh motion for our constellations.

Yet to decide which one of them it be

Is not the least the business of a man

Advancing step by cautious step, as I.

And that the earth may there abide at rest

In the mid-region of the world, it needs

Must vanish bit by bit in weight and lessen,

And have another substance underneath,

Conjoined to it from its earliest age

In linked unison with the vasty world's

Realms of the air in which it roots and lives.

On this account, the earth is not a load,

Nor presses down on winds of air beneath;

Even as unto a man his members be

Without all weight- the head is not a load

Unto the neck; nor do we feel the whole

Weight of the body to centre in the feet.

But whatso weights come on us from without,

Weights laid upon us, these harass and chafe,

Though often far lighter. For to such degree

It matters always what the innate powers

Of any given thing may be. The earth

Was, then, no alien substance fetched amain,

And from no alien firmament cast down

On alien air; but was conceived, like air,

In the first origin of this the world,

As a fixed portion of the same, as now

Our members are seen to be a part of us.

Besides, the earth, when of a sudden shook

By the big thunder, doth with her motion shake

All that's above her- which she ne'er could do

By any means, were earth not bounden fast

Unto the great world's realms of air and sky:

For they cohere together with common roots,

Conjoined both, even from their earliest age,

In linked unison. Aye, seest thou not

That this most subtle energy of soul

Supports our body, though so heavy a weight,-

Because, indeed, 'tis with it so conjoined

In linked unison? What power, in sum,

Can raise with agile leap our body aloft,

Save energy of mind which steers the limbs?

Now seest thou not how powerful may be

A subtle nature, when conjoined it is

With heavy body, as air is with the earth

Conjoined, and energy of mind with us?

Nor can the sun's wheel larger be by much

Nor its own blaze much less than either seems

Unto our senses. For from whatso spaces

Fires have the power on us to cast their beams

And blow their scorching exhalations forth

Against our members, those same distances

Take nothing by those intervals away

From bulk of flames; and to the sight the fire

Is nothing shrunken. Therefore, since the heat

And the outpoured light of skiey sun

Arrive our senses and caress our limbs,

Form too and bigness of the sun must look

Even here from earth just as they really be,

So that thou canst scarce nothing take or add.

And whether the journeying moon illuminate

The regions round with bastard beams, or throw

From off her proper body her own light,-

Whichever it be, she journeys with a form

Naught larger than the form doth seem to be

Which we with eyes of ours perceive. For all

The far removed objects of our gaze

Seem through much air confused in their look

Ere minished in their bigness. Wherefore, moon,

Since she presents bright look and clear-cut form,

May there on high by us on earth be seen

Just as she is with extreme bounds defined,

And just of the size. And lastly, whatso fires

Of ether thou from earth beholdest, these

Thou mayst consider as possibly of size

The least bit less, or larger by a hair

Than they appear- since whatso fires we view

Here in the lands of earth are seen to change

From time to time their size to less or more

Only the least, when more or less away,

So long as still they bicker clear, and still

Their glow's perceived.

Nor need there be for men

Astonishment that yonder sun so small

Can yet send forth so great a light as fills

Oceans and all the lands and sky aflood,

And with its fiery exhalations steeps

The world at large. For it may be, indeed,

That one vast-flowing well-spring of the whole

Wide world from here hath opened and out-gushed,

And shot its light abroad; because thuswise

The elements of fiery exhalations

From all the world around together come,

And thuswise flow into a bulk so big

That from one single fountain-head may stream

This heat and light. And seest thou not, indeed,

How widely one small water-spring may wet

The meadow-lands at times and flood the fields?

'Tis even possible, besides, that heat