No More Learning

Each beast, each insect, happy in its own: 185
Is Heav'n unkind to Man, and Man alone?
Shall he alone, whom rational we call,
Be pleas'd with nothing, if not bless'd with all?

The bliss of Man (could Pride that blessing find)
Is not to act or think beyond mankind; 190
No pow'rs of body or of soul to share,
But what his nature and his state can bear.
Why has not Man a microscopic eye?
For this plain reason, Man is not a Fly.
Say what the use, were finer optics giv'n, 195
T' inspect a mite, not comprehend the heav'n?
Or touch, if tremblingly alive all o'er,
To smart and agonize at every pore?
Or quick effluvia darting thro' the brain,
Die of a rose in aromatic pain? 200
If Nature thunder'd in his op'ning ears,
And stunn'd him with the music of the spheres,
How would he wish that Heav'n had left him still
The whisp'ring Zephyr, and the purling rill?
Who finds not Providence all good and wise, 205
Alike in what it gives, and what denies?

VII. Far as Creation's ample range extends,
The scale of sensual, mental pow'rs ascends:
Mark how it mounts, to Man's imperial race,
From the green myriads in the peopled grass: 210
What modes of sight betwixt each wide extreme,
The mole's dim curtain, and the lynx's beam:
Of smell, the headlong lioness between,
And hound sagacious on the tainted green:
Of hearing, from the life that fills the Flood, 215
To that which warbles thro' the vernal wood:
The spider's touch, how exquisitely fine!
Feels at each thread, and lives along the line:
In the nice bee, what sense so subtly true
From pois'nous herbs extracts the healing dew? 220
How Instinct varies in the grov'lling swine,
Compar'd, half-reas'ning elephant, with thine!
'Twixt that, and Reason, what a nice barrier,
For ever sep'rate, yet for ever near!
Remembrance and Reflection how ally'd; 225
What thin partitions Sense from Thought divide:
And Middle natures, how they long to join,
Yet never pass th' insuperable line!
Without this just gradation, could they be
Subjected, these to those, or all to thee? 230
The pow'rs of all subdu'd by thee alone,
Is not thy Reason all these pow'rs in one?

VIII. See, thro' this air, this ocean, and this earth,
All matter quick, and bursting into birth.
Above, how high, progressive life may go! 235
Around, how wide! how deep extend below!
Vast chain of Being! which from God began,
Natures ethereal, human, angel, man,
Beast, bird, fish, insect, what no eye can see,
No glass can reach; from Infinite to thee, 240
From thee to Nothing. --On superior pow'rs
Were we to press, inferior might on ours:
Or in the full creation leave a void,
Where, one step broken, the great scale's destroy'd:
From Nature's chain whatever link you strike, 245
Tenth or ten thousandth, breaks the chain alike.

And, if each system in gradation roll
Alike essential to th' amazing Whole,
The least confusion but in one, not all
That system only, but the Whole must fall. 250
Let Earth unbalanc'd from her orbit fly,
Planets and Suns run lawless thro' the sky;
Let ruling Angels from their spheres be hurl'd,
Being on Being wreck'd, and world on world;
Heav'n's whole foundations to their centre nod, 255
And Nature tremble to the throne of God.
All this dread ORDER break--for whom? for thee?
Vile worm!