Should Lanterns Shine Lyrics

Should lanterns shine, the holy face,
Caught in an octagon of unaccustomed light,
Would wither up, an any boy of love
Look twice before he fell from grace.
The features in their private dark
Are formed of flesh, but let the false day come
And from her lips the faded pigments fall,
The mummy cloths expose an ancient breast.

I have been told to reason by the heart,
But heart, like head, leads helplessly;
Dylan Thomas - Should Lanterns Shine - http://motolyrics.com/dylan-thomas/should-lanterns-shine-lyrics.html
I have been told to reason by the pulse,
And, when it quickens, alter the actions' pace
Till field and roof lie level and the same
So fast I move defying time, the quiet gentleman
Whose beard wags in Egyptian wind.

I have heard may years of telling,
And many years should see some change.

The ball I threw while playing in the park
Has not yet reached the ground.