Hige sceal þē heardra, heorte þē cēnre,
mōd sceal þē māre, þē ūre mægen lytlað.
Thought shall be harder, heart the keener,
Mood the more, as our might lessens.
Line 312; translation from Michael Alexander The Earliest English Poems (Harmondsworth: Penguin, 1975) p. 112.
or
Will must be the harder, courage the bolder,
spirit must be the more, as our might lessens.