2. After looking at his face, I inspected his eyes, and found his pupils glinting as with rays of light. Later they became opaque, and the irises became definitely green; and finally they were covered as with a coating. As a result of this the whole crystalline lens in the pupil appeared like a white spot. On observing this I asked him whether he could see anything at all; and he replied, 'I can see clearly, more in fact than before.' I asked, 'How can you see when your eyes are guttae serenae?* Perhaps you see something: inside by deceptive light!' He answered, 'What is deceptive light!' So to let him know what deceptive light is, I asked, 'What do you think by your light!' ''I think I see clearly', he said, 'that a beast thinks as rationally as a man; secondly, that God is nature and nature God; then that religion is vanity; further, that good or evil is nothing but what is pleasant and unpleasant'; and more of the same kind. * Amaurosis, a condition in which the cornea becomes opaque.