Much instruction was also given in the Mysteries by the archangelic and other hierarchies, and Pythagoras, the great teacher who was initiated in India, and who gave "the knowledge of things that are" to his pledged disciples, is said to have possessed such a knowledge of music that he could use it for the controlling of men's wildest passions, and the illuminating of their minds. Of this, instances are given by Iamblichus in his _Life of Pythagoras_. It seems probable that the title of Theodidaktos, given to Ammonius Saccas, the master of Plotinus, referred less to the sublimity of his teachings than to this divine instruction received by him in the Mysteries. Some of the symbols used are explained by Iamblichus,[25] who bids Porphyry remove from his thought the image of the thing symbolised and reach its intellectual meaning. Thus "mire" meant everything that was bodily and material; the "God sitting above the lotus" signified that God transcended both the mire and the intellect, symbolised by the lotus, and was established in Himself, being seated. If "sailing in a ship," His rule over the world was pictured. And so on.[26] On this use of symbols Proclus remarks that "the Orphic method aimed at revealing divine things by means of symbols, a method common to all writers of divine lore."[27] The Pythagorean School in Magna Græcia was closed at the end of the sixth century B.C., owing to the persecution of the civil power, but other communities existed, keeping up the sacred tradition.[28] Mead states that Plato intellectualised it, in order to protect it from an increasing profanation, and the Eleusinian rites preserved some of its forms, having lost its substance. The Neo-Platonists inherited from Pythagoras and Plato, and their works should be studied by those who would realise something of the grandeur and the beauty preserved for the world in the Mysteries. The Pythagorean School itself may serve as a type of the discipline enforced. On this Mead gives many interesting details,[29] and remarks: "The authors of antiquity are agreed that this discipline had succeeded in producing the highest examples, not only of the purest chastity and sentiment, but also a simplicity of manners, a delicacy, and a taste for serious pursuits which was unparalleled. This is admitted even by Christian writers." The School had outer disciples, leading the family and social life, and the above quotation refers to these. In the inner School were three degrees--the first of Hearers, who studied for two years in silence, doing their best to master the teachings; the second degree was of Mathematici, wherein were taught geometry and music, the nature of number, form, colour, and sound; the third degree was of Physici, who mastered cosmogony and metaphysics. This led up to the true Mysteries. Candidates for the School must be "of an unblemished reputation and of a contented disposition."