"I do not aim with my ballistic control system - he who aims with his ballistic control system has forgotten the face of his father.
I aim with my eye.
I do not shoot with my tracking computer - he who shoots with his tracking computer has forgotten the face of his father.
I shoot with my mind.
I do not kill with my missiles - he who kills with his missiles has forgotten the face of his father.
I kill with my heart."
(adapted from Stephen King - The Gunslinger)