Classic Poem

'Twixt other attributes which man doth share
This is the difference, and religious lore,
That ere on its first rudiments he dare
To cast an eye, e'en to its inmost core
The heart must be renewed; no soul can soar
To its most simple rules, till, on the wings
Of the most holy Dove, it learn t'explore
Truths, which, to those are, round whom this world clings,
In heaven's own archives kept, unutterable things!