Lucretius, De Rerum Natura
William Ellery Leonard, Ed.

     Once more, we all from seed celestial spring,
To all is that same father, from whom earth,
The fostering mother, as she takes the drops
Of liquid moisture, pregnant bears her broods-
The shining grains, and gladsome shrubs and trees,
And bears the human race and of the wild
The generations all, the while she yields
The foods wherewith all feed their frames and lead
The genial life and propagate their kind;
Wherefore she owneth that maternal name,
By old desert. What was before from earth,
The same in earth sinks back, and what was sent
From shores of ether, that, returning home,
The vaults of sky receive. Nor thus doth death
So far annihilate things that she destroys
The bodies of matter; but she dissipates
Their combinations, and conjoins anew
One element with others; and contrives
That all things vary forms and change their colours
And get sensations and straight give them o'er.
And thus may'st know it matters with what others
And in what structure the primordial germs
Are held together, and what motions they
Among themselves do give and get; nor think
That aught we see hither and thither afloat
Upon the crest of things, and now a birth
And straightway now a ruin, inheres at rest
Deep in the eternal atoms of the world.
     Why, even in these our very verses here
It matters much with what and in what order
Each element is set: the same denote
Sky, and the ocean, lands, and streams, and sun;
The same, the grains, and trees, and living things.
And if not all alike, at least the most-
But what distinctions by positions wrought!
And thus no less in things themselves, when once
Around are changed the intervals between,
The paths of matter, its connections, weights,
Blows, clashings, motions, order, structure, shapes,
The things themselves must likewise changed be.
     Now to true reason give thy mind for us.
Since here strange truth is putting forth its might
To hit thee in thine ears, a new aspect
Of things to show its front. Yet naught there is
So easy that it standeth not at first
More hard to credit than it after is;
And naught soe'er that's great to such degree,
Nor wonderful so far, but all mankind
Little by little abandon their surprise.
Look upward yonder at the bright clear sky
And what it holds- the stars that wander o'er,
The moon, the radiance of the splendour-sun:
Yet all, if now they first for mortals were,
If unforeseen now first asudden shown,
What might there be more wonderful to tell,
What that the nations would before have dared
Less to believe might be?- I fancy, naught-
So strange had been the marvel of that sight.
The which o'erwearied to behold, to-day
None deigns look upward to those lucent realms.
Then, spew not reason from thy mind away,
Beside thyself because the matter's new,
But rather with keen judgment nicely weigh;
And if to thee it then appeareth true,
Render thy hands, or, if 'tis false at last,
Gird thee to combat. For my mind-of-man
Now seeks the nature of the vast Beyond
There on the other side, that boundless sum
Which lies without the ramparts of the world,
Toward which the spirit longs to peer afar,
Toward which indeed the swift elan of thought
Flies unencumbered forth.