Carcer Voluntarius
Carcere non clauso spatium patet aetheris ingens;
Non volo: Libertas carcere stare mea est.

The vocabulary is keyed to the DCC Latin Vocabulary list. There are only two words in this poem that are not on the DCC list:
carcer, carceris m. - prison, jail
voluntārius -a -um - voluntary, willing
aethēr aetheris n.: pure upper air, ether, heaven, sky
claudō claudere clausī clausum: close, shut
ingēns ingentis: huge, enormous
lībertās -ātis f.: freedom
meus -a -um: my
nōn: not
pateō patēre patuī: lie open, extend, spread
spatium -iī n.: space
stō stāre stetī statum: stand
sum, esse, fuī: be, exist
volō velle voluī: wish, be willing