After Wings

This was your butterfly, you see,—
His fine wings made him vain:
The caterpillars crawl, but he
Passed them in rich disdain.—
My pretty boy says, “Let him be
Only a worm again!”
O child, when things have learned to wear
Wings once, they must be fain
To keep them always high and fair:
Think of the creeping pain
Which even a butterfly must bear
To be a worm again!