Answer:
unconquerable soul
Explanation:
"Invictus" is a poem written by William Henley where he presented his feelings about his illness, which was very serious and complicated. Henley suffered from bone tuberculosis, but the poem showed that he was not afraid of the disease, nor of death, nor of his aggressive treatment against the disease, but he faced it all with dignity, courage and confidence, as he would face any other adversity that life promote, because his soul was invincible.
