Quod si deficiant vires, audacia certe
Laus erit: in magnis et voluisse sat est
[What though strength fails? Boldness is certain to win praise. In mighty enterprises, it is enough to have had the determination.]

Propertius (50-16 BC) Roman elegiac poet [Sextus Propertius]

Elegies II, x, 5

Alt trans.: "And if my strength fails, at least my boldness will be a title of honor."