Why from your gilded cage you go?"
A Stripling to his Goldfinch said
Who to a neighb'ring grove had fled:
"To give you all that you could ask.
Has ever been my pleasing task."
"'Tis true," replies the Bird, "less good
Will be my lodging and my food;
But nothing will my wings confine.
And native liberty be mine.''
Source: Boothby - Aesop 2.50
(not in Mille - not in Perry)