Is this apparent, when thou turn'st to muse
Upon the scheme of earth and man in chief,
That admiration grows as knowledge grows?
That imperfection means perfection hid,
Reserved in part, to grace the after-time?
If, in the morning of philosophy,
Ere aught had been recorded, nay perceived,
Thou, with the light now in thee, couldst have looked
On all earth's tenantry, from worm to bird,
Ere man, her last, appeared upon the stage—