The litany against fear is an incantation used by the Bene Gesserit to focus their minds and calm themselves in times of peril. The litany is as follows:
I must not fear.
Fear is the mind-killer.
Fear is the little-death that brings total obliteration.
I will face my fear.
I will permit it to pass over me and through me.
And when it has gone past I will turn the inner eye to see its path.
Where the fear has gone there will be nothing.
Only I will remain.
Lady Jessica teaches it to her son Paul, who uses it when faced with Mohiam’s test of his ability to withstand excruciating pain.