On the nature of things (books 1 - 3)   

Till thou see through the nature of all things,
And how exists the interwoven frame.

But since I've taught that bodies of matter, made
Completely solid, hither and thither fly
Forevermore unconquered through all time,
Now come, and whether to the sum of them
There be a limit or be none, for thee
Let us unfold; likewise what has been found
To be the wide inane, or room, or space
Wherein all things soever do go on,
Let us examine if it finite be
All and entire, or reach unmeasured round
And downward an illimitable profound.

Thus, then, the All that is is limited
In no one region of its onward paths,
For then 'tmust have forever its beyond.
And a beyond 'tis seen can never be
For aught, unless still further on there be
A somewhat somewhere that may bound the same-
So that the thing be seen still on to where
The nature of sensation of that thing
Can follow it no longer. Now because
Confess we must there's naught beside the sum,
There's no beyond, and so it lacks all end.
It matters nothing where thou post thyself,
In whatsoever regions of the same;
Even any place a man has set him down
Still leaves about him the unbounded all
Outward in all directions; or, supposing
moment the all of space finite to be,
If some one farthest traveller runs forth
Unto the extreme coasts and throws ahead
A flying spear, is't then thy wish to think
It goes, hurled off amain, to where 'twas sent
And shoots afar, or that some object there
Can thwart and stop it? For the one or other
Thou must admit; and take. Either of which
Shuts off escape for thee, and does compel
That thou concede the all spreads everywhere,
Owning no confines. Since whether there be
Aught that may block and check it so it comes
Not where 'twas sent, nor lodges in its goal,
Or whether borne along, in either view
'Thas started not from any end. And so
I'll follow on, and whereso'er thou set
The extreme coasts, I'll query, "what becomes
Thereafter of thy spear?" 'Twill come to pass
That nowhere can a world's-end be, and that
The chance for further flight prolongs forever
The flight itself. Besides, were all the space
Of the totality and sum shut in
With fixed coasts, and bounded everywhere,
Then would the abundance of world's matter flow
Together by solid weight from everywhere
Still downward to the bottom of the world,
Nor aught could happen under cope of sky,
Nor could there be a sky at all or sun-
Indeed, where matter all one heap would lie,
By having settled during infinite time.
But in reality, repose is given
Unto no bodies 'mongst the elements,
Because there is no bottom whereunto