This little poem comes from Disticha de Educatione of Urbano Appendini, published in 1834; you can see the whole book at Google Books.
Amarities
Dum puerorum aetas sibi tantum dulcia poscit,
Magnam incauta sibi quaerit amaritiem.
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:
amārities (amaritiēi, f.): bitterness
incautus, -a, -um: heedless, reckless
aetās -tātis f.: age, time of life
dulcis -e: sweet
dum: while (+ indic.); until (+ subj.); provided that (+ subj.)
māgnus -a -um great
pōscō pōscere popōscī: demand, claim; inquire into
puer puerī m.: boy; slave
quaerō -rere -sīvī-situm: seek, inquire
sui, sibi, sē: him- her- itself
tantus -a -um: so great, so much; tantum: only
