These prison walls can never tame
A heart as proud as mine,
No tiny cell, no dungeon hell,
Can make me scrape and whine.
For when you've breathed the breath of hope
And known what freedom is.
No ball and chain, no kind of pain,
Can make you bow or flinch.
Tan Pratonix
http://www.poemhunter.com/poem/freedom-23/