Souls are older than bodies, he says in _Phaedo_; they are ever being born again from _Hades_ and returning to life on earth; each man has his daimon,[136] who follows him throughout his existences, and at death takes him to the lower world[137] for Judgment.[138] Many souls enter Acheron,[139] and, after a longer or shorter period, return to earth to be incarnated in new bodies. Unpardonable sins fling the soul into Tartarus.[140] "Know that if you become worse you will go to the worse souls, or if better to the better, and in every succession of life and death you will do and suffer what like may fitly suffer at the hands of like...."[141] According to Plato, the period between two incarnations is about a thousand years.[142] Man has reminiscences of his past lives that are more or less distinct; they are manifested rather by an intuitive impression than by a definite memory, but they form part of the individual,[143] and at times influence him strongly. "Innate ideas" are only one aspect of memory, often it is impossible to explain them by heredity, education, or environment; they are attainments of the past, the store which the soul takes with it through its incarnations, which it adds to during each sojourn in heaven. There can be no doubt that Plato would appear to have taught metempsychosis, _i.e._, the possibility of a human soul passing into the body of an animal: "Men who have followed after gluttony and wantonness and drunkenness, and have had no thought of avoiding them, would pass into asses and animals of that sort. And those who have chosen the portion of injustice and tyranny and violence will pass into wolves or hawks or kites, and there is no difficulty in assigning to all of them places according to their several natures and propensities."[144] Under the heading of _Neoplatonism_, we shall show that, beneath these coarse symbols, Plato concealed truths which it was then necessary to keep profoundly secret; which, even nowadays, it is not permitted to reveal to all. OLD TESTAMENT. H. P. Blavatsky tells us that the _Old Testament_ is not a homogeneous composition; that _Genesis_ alone is of immense antiquity; that it is prior to the time when the Libra of the Zodiac was invented by the Greeks, for it has been noticed that the chapters containing the genealogies have been touched up so as to adapt them to the new zodiac, and this is the reason that the rabbis who compiled them twice repeated the names of Enoch and Lamech in the Cain list. The other parts seem to be of a comparatively recent date and to have been completed about 150 B.C.