This little poem comes from Disticha de Educatione of Urbano Appendini, published in 1834; you can see the whole book at Google Books.
Libertas etiam tibi sit iucunda, sed omni
In primis quae te liberat a vitio.
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:
iūcundus -a -um: pleasant agreeable
līberō -āre: free, liberate
ā ab abs: from, by (+abl.)
etiam: also, even
in: in, on (+ abl.); into, onto (+ acc)
lībertās -ātis f.: freedom
omnis -e: all, every, as a whole
prīmus -a -um: first; adv. prīmum: at first, firstly
qui quae quod: who, which, what / quis quid: who? what? which?
sum, esse, fuī: be, exist
tū tuī tibi tē: you (sing.)
vitium -ī n.: flaw, fault, crime