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III.

So haply through all Being's round
To this condition Good is bound,
Evil in this alliance found;
That each must to the other lead,
And from the other each proceed.

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And are they then each other's dower,
Two opposite forces of one Power,
Indifferent, central? must we give
Credence to that about the poles
The positive and negative?
Think that the still-contending twain
(Magnetic double-acting vein)
Ever towards equilibrium strain;
Each when it finds a yielded space,
Pressing to take the other's place?
While to their union would we mount
The ever mystic marvellous Fount
Of Good and Evil, where they live
In unimagined Essence bright
Of Perfect, Necessary, Right,
We come but to the Soul of Souls
Unknowable, for aye unknown
The Centre—God? whence issuing, still
Is issuing into Good and Ill?—
Who knows? but one thing might be shown:
Some Evil there must be where'er
Is Imperfection, foul or fair:
Perfection by a hairbreadth missed
Is Imperfection; you must say
The One Allperfect every way
Is God alone—what else but He?—
It follows—Evil must exist
Or God's the sole Existence be.