On the nature of things (books 4 - 6)   

Is filled, at child-bearing, with the sweet milk,
Because all that swift stream of aliment
Is thither turned unto the mother-breasts.
There earth would furnish to the children food;
Warmth was their swaddling cloth, the grass their bed
Abounding in soft down. Earth's newness then
Would rouse no dour spells of the bitter cold,
Nor extreme heats nor winds of mighty powers-
For all things grow and gather strength through time
In like proportions; and then earth was young.

Wherefore, again, again, how merited
Is that adopted name of Earth- The Mother!-
Since she herself begat the human race,
And at one well-nigh fixed time brought forth
Each breast that ranges raving round about
Upon the mighty mountains and all birds
Aerial with many a varied shape.
But, lo, because her bearing years must end,
She ceased, like to a woman worn by eld.
For lapsing aeons change the nature of
The whole wide world, and all things needs must take
One status after other, nor aught persists
Forever like itself. All things depart;
Nature she changeth all, compelleth all
To transformation. Lo, this moulders down,
A-slack with weary eld, and that, again,
Prospers in glory, issuing from contempt.
In suchwise, then, the lapsing aeons change
The nature of the whole wide world, and earth
Taketh one status after other. And what
She bore of old, she now can bear no longer,
And what she never bore, she can to-day.

In those days also the telluric world
Strove to beget the monsters that upsprung
With their astounding visages and limbs-
The Man-woman- a thing betwixt the twain,
Yet neither, and from either sex remote-
Some gruesome Boggles orphaned of the feet,
Some widowed of the hands, dumb Horrors too
Without a mouth, or blind Ones of no eye,
Or Bulks all shackled by their legs and arms
Cleaving unto the body fore and aft,
Thuswise, that never could they do or go,
Nor shun disaster, nor take the good they would.
And other prodigies and monsters earth
Was then begetting of this sort- in vain,
Since Nature banned with horror their increase,
And powerless were they to reach unto
The coveted flower of fair maturity,
Or to find aliment, or to intertwine
In works of Venus. For we see there must
Concur in life conditions manifold,
If life is ever by begetting life
To forge the generations one by one:
First, foods must be; and, next, a path whereby
The seeds of impregnation in the frame
May ooze, released from the members all;
Last, the possession of those instruments
Whereby the male with female can unite,
The one with other in mutual ravishments.

And in the ages after monsters died,