“Before this we were one community, none knew whether we were good or bad. False coin and fine (both) were current in the world, since all was night, and we were as night-travellers, Until the sun of the prophets rose and said, “Begone, O alloy! Come, O thou that art pure!” The eye can distinguish colours, the eye knows ruby and (common) stone. The eye knows the jewel and the rubbish; hence bits of rubbish sting the eye.”