Dylan Thomas and the Fall

During last night's insomnia, I cracked open the Dylan Thomas collection of poetry that my brother got me for my birthday one year. My attention was caught by the following poem, entitled "Now."

Now
Say nay,
Man dry man,
Dry lover mine
The deadrock base and blow the flowered anchor,
Should he, for centre sake, hop in the dust,
Forsake, the fool, the hardiness of anger.

Now
Say nay,
Sir no say,
Death to the yes,
the yes to death, the yesman and the answer,
Should he who split his children with a cure
Have brotherless his sister on the handsaw.

Now
Say nay,
No say sir
Yea the dead stir,
And this, nor this, is shade, the landed crow,
He lying low with ruin in his ear,
The cockrel's tide upcasting from the fire.

Now
Say nay,
So star fall,
So the ball fail,
So solve the mystic sun, the wife of light,
The sun that leaps on petals through a nought,
the come-a-cropper rider of the flower.

Now
Say nay
A fig for
The seal of fire,
Death hairy-heeled and the tapped ghost in wood,
We make me mystic as the arm of air,
The two-a-vein, the foreskin, and the cloud.

It is a beautiful poem, and the sound of it is what attracted me most, although the visual elements are almost equally appealing. As to the meaning of the poem, the best I can guess that this is Thomas' plea to Adam not to eat the apple from the Tree of Knowledge. Thomas' poetry often deals with death and aging, and he also writes poems connecting innocence and the wilderness. His treatment of the wilderness is often Eden-like, and he references both Eden and Adam in many of his poems. I think it is safe to say that the Fall of Man was at least on his mind.

Addendum: Take a look at the visual structure of the poem. Do you see the the way the text looks like it's falling? I'm convinced I'm correct.