Source identified1
“My head is bloody, but unbowed.”
The speaker acknowledges injury without surrendering inward posture, making the line a compact image of retaining agency and self-possession under circumstances that have already caused real harm.
Source note: “Invictus,” first published in Henley’s 1888 Book of Verses (written 1875) and represented through the public-domain poem text. This is the second stanza’s closing line, following “Under the bludgeonings of chance”; this collection keeps the poem’s defiant lyric voice rather than treating it as a guarantee that adversity can always be mastered.