The Italian language is rich with proverbs! Here are a few proverbs and expressions in which potere, volere, and dovere make their appearances:
Volere è potere. (Where there s a will there s a way.)
Volere o volare! (There s no getting away from it.)
Quello che ci vuole (just what the doctor ordered)
Volerne a qualcuno (to hold it against someone)
Non poterne più (to have had it)
Come si deve (decent)
Chi di dovere (the person responsible)
A dovere (properly)