“The divine Plato, (says Proclus in his MS. Scholia on the Cratylus,) knew that there are three kinds of Sirens; the _celestial_, which is under the government of Jupiter; _that which produces generation_, and is under the government of Neptune; and _that which is cathartic_, and is under the government of Pluto. It is common to all these to incline all things through an harmonic motion to their ruling Gods. Hence, when the soul is in the heavens, the Sirens are desirous of uniting it to the divine life which florishes there. But it is proper that souls living in generation should sail beyond them, like the Homeric Ulysses, that they may not be allured by generation, of which the sea is an image. And when souls are in Hades, the Sirens are desirous of uniting them through intellectual conceptions to Pluto. So that Plato knew that in the kingdom of Hades there are Gods, dæmons, and souls, who dance as it were round Pluto, allured by the Sirens that dwell there.” See more concerning the Sirens in my translation of Proclus on the Theology of Plato, Book the 6th. P. 60. _That it is requisite to put the shoe on the right foot first._ This audition is taken from what forms the 12th Symbol in the Protreptics of Iamblichus, and is as follows: “When stretching forth your feet to have your sandals put on, first extend your right foot; but when about to use a foot bath, first extend your left foot.” “This Symbol, (says Iamblichus,) exhorts to practical prudence, admonishing us to place worthy actions about us as right-handed; but entirely to lay aside and throw away such as are base, as being left-handed.” P. 60. _That it is not proper to walk in the public ways._ This is the 5th Symbol in the Protreptics of Iamblichus, but is there differently expressed: for it is, “Declining from the public ways, walk in unfrequented paths.” On which Iamblichus observes: “I think that this Symbol also contributes to the same thing as the preceding, [which is, ‘Disbelieve, nothing wonderful concerning the Gods, nor concerning divine dogmas’]. For this exhorts us to abandon a popular and merely human life; but thinks fit that we should pursue a separate and divine life. It also signifies that it is necessary to look above common opinions; but very much to esteem such as are private and arcane; and that we should despise merely human delight; but ardently pursue that felicitous mode of conduct which adheres to the divine will. It likewise exhorts us to dismiss human manners as popular, and to exchange for these the religious cultivation of the Gods, as transcending a popular life.” P. 61. _Do not assist a man in laying a burden down._