Now, since every instance of motion in the animal spirits is accompanied by an impulse of the soul, and since traces in the brain are followed by thoughts in the mind, it is clear that as we are now deprived of the power of removing these traces and arresting this motion, we find ourselves moved by the presence of someone whodominates us, to take part in his desires and feelings, and to devote all our attention to him, just as he is led to devote his attention to us, although in a different way.