William Ernest Henley Quote

Out of the night that covers me,
Black as the Pit from pole to pole,
I thank whatever gods may be
For my unconquerable soul.
In the fell clutch of circumstance,
I have not winced nor cried aloud:
Under the bludgeonings of chance
My head is bloody, but unbowed.

'Invictus. In Memoriam R.T.H.B.' (1888)