Diadochus of Photice’s views on the discernment of spirits. He says that we have to keep the surface calm so that we can see deep into the soul. “When the sea is calm, the eyes of the fishermen can penetrate to the point where he can distinguish different movements in the depth of the water, so that hardly any of the creatures who move through the pathways of the sea escape him, but when the sea is agitated by the wind, she hides in her dark restlessness what she shows in the smile of a clear day.”
