Of the Terrible Doubt of Appearances

OF the terrible doubt of appearances,
Of the uncertainty after all--that we may be deluded,
That may-be reliance and hope are but speculations after all,
That may-be identity beyond the grave is a beautiful fable only,
May-be the things I perceive--the animals, plants, men, hills,
    shining and flowing waters,   
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The skies of day and night--colors, densities, forms--May-be these are,
    (as doubtless they are,) only apparitions, and the real something has yet to be known;
(How often they dart out of themselves, as if to confound me and mock me!

How often I think neither I know, nor any man knows, aught of them;)
May-be seeming to me what they are, (as doubtless they indeed but seem,) as from my
    present point of view--And might prove, (as of course they would,) naught of what
    they appear, or naught any how, from entirely changed points of view;
To me, these, and the like of these, are curiously answer’d by my lovers, my dear friends;   
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When he whom I love travels with me, or sits a long while holding me by the hand,
When the subtle air, the impalpable, the sense that words and reason hold not, surround
    us and pervade us,
Then I am charged with untold and untellable wisdom--I am silent--I require nothing further,
I cannot answer the question of appearances, or that of identity beyond the grave;
But I walk or sit indifferent--I am satisfied,   
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He ahold of my hand has completely satisfied me.