No More Learning

If the great end be human Happiness,
Then Nature deviates; and can Man do less? 150
As much that end a constant course requires
Of show'rs and sun-shine, as of Man's desires;
As much eternal springs and cloudless skies,
As Men for ever temp'rate, calm, and wise.
If plagues or earthquakes break not Heav'n's design, 155
Why then a Borgia, or a Catiline?
Who knows but he, whose hand the lightning forms,
Who heaves old Ocean, and who wings the storms;
Pours fierce Ambition in a Caesar's mind,
Or turns young Ammon loose to scourge mankind? 160
From pride, from pride, our very reas'ning springs;
Account for moral, as for nat'ral things:
Why charge we Heav'n in those, in these acquit?
In both, to reason right is to submit.

Better for Us, perhaps, it might appear, 165
Were there all harmony, all virtue here;
That never air or ocean felt the wind;
That never passion discompos'd the mind.
But ALL subsists by elemental strife;
And Passions are the elements of Life. 170
The gen'ral ORDER, since the whole began,
Is kept in Nature, and is kept in Man.

VI. What would this Man? Now upward will he soar,
And little less than Angel, would be more;
Now looking downwards, just as griev'd appears 175
To want the strength of bulls, the fur of bears.
Made for his use all creatures if he call,
Say what their use, had he the pow'rs of all?
Nature to these, without profusion, kind,
The proper organs, proper pow'rs assign'd; 180
Each seeming want compensated of course,
Here with degrees of swiftness, there of force;
All in exact proportion to the state;
Nothing to add, and nothing to abate.
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?