"Discerning Different Spirits."
In the case of those who are going from good to better, the good angel touches the soul gently, lightly and sweetly, like a drop of water going into a sponge. The evil spirit touches it sharply, with noise and disturbance, like a drop of water falling on to a stone.
In the case of those who are going from bad to worse, these spirits touch the souls in the opposite manner.
(Spiritual Exercises, #335)