Here is the poem.
Yet Gentle Will the Griffin Be
by Vachel Lindsey
The moon? It is a griffin's egg,
Hatching to-morrow night.
And how the little boys will watch
With shouting and delight
To see him break the shell and stretch
And creep across the sky.
The boys will laugh. The little girls, I fear, may hide and cry.
Yet gentle will the griffin be,
Most decorours and fat,
And walk up the Milky Way
And lap it like a cat.