This little poem comes from Disticha de Educatione of Urbano Appendini, published in 1834; you can see the whole book at Google Books.
Discere qui potuit melicas, et noluit, artes,
Iudice me, duris durior ille feris.
The vocabulary is keyed to the DCC Latin Vocabulary list. There is only one word in this poem that is not on the DCC list:
melicus -a -um - musical, having to do with music, lyric poetry
ars artis f.: skill
disco -ere didicī: learn
dūrus -a -um: hard, tough, harsh
ego me mihi mē: I, me
ferus -a -um: wild, fierce; fera: wild beast
ille, illa, illud: that
iūdex iūdicis m.: judge, juror
nōlo nōlle, nōluī: be unwilling
possum posse potuī: be able
qui, quae, quod: who, which, what; quis quid: who? what? which?