The notes here are taken from the actual Scala, so be warned that references to the "previous" proverb refer to its order in the Scala, not its order here. You can read more about the word at the Verbosum blog: EXPENDO.
Parvae expensae saepe factae consumunt patrimonium.
Gaudebis semper vespere, si diem expendas fructuose.
Expende Hannibalem: quot libras in duce summo invenies?