The mystics, or those who were illumined, have all had an experience in common: They have seen the Cosmic Light. That is why it is said that they were illumined. They have all had much the same experience, whether it was Moses coming down from the mountain; whether it was Jesus after the resurrection; whether it was Saul on the return to Damascus; whether it was Plotinus, who, according to his pupils, had seven distinct periods of illumination.