Tis hard, I admit, yet virtue aims at what is hard, and gratitude for such a service will be all the greater.
Difficile est, fateor, sed tendit in ardua virtus
et talis meriti gratia maior erit.
et talis meriti gratia maior erit.
Original text (Latin)
Notes from Wikiquote
II, ii, 111-112; translation by Arthur Leslie Wheeler