This poem is from the Hortulus Carminum Selectorum by Josephus Perez (1627-1694).
Tandem exspectando meliora senescimus omnes;
Sperando melius, fit lupus ipse vetus.
The vocabulary is keyed to the DCC Latin Vocabulary list. There are two words in this poem that are not on the DCC list:
lupus (lupī, m.): wolf
senescō, senescere: grow old, age
exspectō -āre: watch, wait, expect
fīō fierī factus sum: become
ipse ipsa ipsum: him- her- itself
melior -ius: better
omnis -e: all, every, as a whole
spērō -āre: to hope
vetus veteris: old