William Ernest Henley (23 August 1849  – 11 July 1903) was a British poet, writer, critic and editor. Though he wrote several books of poetry, Henley is remembered most often for his 1875 poem “Invictus“.

What I love the most are its last verses: 

It matters not how strait the gate,
How charged with punishments the scroll,
I am the master of my fate
I am the captain of my soul.