Leave such to tune their own dull rhymes, and know
What's roundly smooth or languishingly slow;
And praise the easy vigour of a line, 360
Where Denham's strength, and Waller's sweetness join.
True ease in writing comes from art, not chance,
As those move easiest who have learn'd to dance.
'Tis not enough no harshness gives offence,
The sound must seem an Echo to the sense: 365
Soft is the strain when Zephyr gently blows,
And the smooth stream in smoother numbers flows;
But when loud surges lash the sounding shore,
The hoarse, rough verse should like the torrent roar:
When Ajax strives some rock's vast weight to throw, 370
The line too labours, and the words move slow;
Not so, when swift Camilla scours the plain,
Flies o'er th' unbending corn, and skims along the main.
Hear how Timotheus' varied lays surprize,
And bid alternate passions fall and rise! 375
While, at each change, the son of Libyan Jove
Now burns with glory, and then melts with love,
Now his fierce eyes with sparkling fury glow,
Now sighs steal out, and tears begin to flow:
Persians and Greeks like turns of nature found, 380
And the world's victor stood subdu'd by Sound!
The pow'r of Music all our hearts allow,
And what Timotheus was, is DRYDEN now.

Avoid Extremes; and shun the fault of such,
Who still are pleas'd too little or too much. 385
At ev'ry trifle scorn to take offence,