On the nature of things (books 1 - 3)   

A blow inflicted can achieve besides
Shaking asunder and loosening all apart?
It happens also, when less sharp the blow,
The vital motions which are left are wont
Oft to win out- win out, and stop and still
The uncouth tumults gendered by the blow,
And call each part to its own courses back,
And shake away the motion of death which now
Begins its own dominion in the body,
And kindle anew the senses almost gone.
For by what other means could they the more
Collect their powers of thought and turn again
From very doorways of destruction
Back unto life, rather than pass whereto
They be already well-nigh sped and so
Pass quite away?
Again, since pain is there
Where bodies of matter, by some force stirred up,
Through vitals and through joints, within their seats
Quiver and quake inside, but soft delight,
When they remove unto their place again:
'Tis thine to know the primal germs can be
Assaulted by no pain, nor from themselves
Take no delight; because indeed they are
Not made of any bodies of first things,
Under whose strange new motions they might ache
Or pluck the fruit of any dear new sweet.
And so they must be furnished with no sense.

Once more, if thus, that every living thing
May have sensation, needful 'tis to assign
Sense also to its elements, what then
Of those fixed elements from which mankind
Hath been, by their peculiar virtue, formed?
Of verity, they'll laugh aloud, like men,
Shaken asunder by a spasm of mirth,
Or sprinkle with dewy tear-drops cheeks and chins,
And have the cunning hardihood to say
Much on the composition of the world,
And in their turn inquire what elements
They have themselves,- since, thus the same in kind
As a whole mortal creature, even they
Must also be from other elements,
And then those others from others evermore-
So that thou darest nowhere make a stop.
Oho, I'll follow thee until thou grant
The seed (which here thou say'st speaks, laughs, and thinks)
Is yet derived out of other seeds
Which in their turn are doing just the same.
But if we see what raving nonsense this,
And that a man may laugh, though not, forsooth,
Compounded out of laughing elements,
And think and utter reason with learn'd speech,
Though not himself compounded, for a fact,
Of sapient seeds and eloquent, why, then,
Cannot those things which we perceive to have
Their own sensation be composed as well
Of intermixed seeds quite void of sense?

INFINITE WORLDS

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