Chap. xxviii.—64. Petilianus said: "But yet, if I may be allowed the comparison, it is certain that the sun appears double to the insane, although it only be that a dark blue cloud often meets it, and its discoloured surface, being struck by the brightness, while the rays of the sun are reflected from it, seems to send forth as it were rays of its own. So in the same way in the faith of baptism, it is one thing to seek for reflections, another to recognise the truth."