Quoting George

Discontent, I repeat, is the life in us that has not enough of itself, is not enough to itself, so calls for more. He has the victory who, in the midst of pain and weakness, cries out, not for death, not for the repose of forgetfulness, but for strength to fight; for more power, more consciousness of being, more God in him; who, when sorest wounded, says with Sir Andrew Barton in the old ballad:--
Fight on my men, says Sir Andrew Barton,
I am hurt, but I am not slain;
I'll lay me down and bleed awhile,
And then I'll rise and fight again;
--and that with no silly notion of playing the hero--what have creatures like us to do with heroism who are not yet barely honest!--but because so to fight is the truth, and the only way.
"Life", Geoge Macdonald