Badass Creeds

This is from the Dark Tower by Stephen King. I don't follow the series, but these few lines stand out all on their own:

The Gunslinger's Creed:

I do not aim with my hand;
He who aims with his hand has forgotten the face of his father.
I aim with my eye.
I do not shoot with my hand;
He who shoots with his hand has forgotten the face of his father.
I shoot with my mind.
I do not kill with my gun;
He who kills with his gun has forgotten the face of his father.
I kill with my heart.