Hayagrīva: Plato believes that at death there is an end of the sensory life of the individual—his thoughts, his perceptions and experiences—and the individual then returns to the ideal world from which he came.
Prabhupāda: That means he believes in eternity. This loss of senses, that is we also accept that there are three stages: jāgrati, awakening, and sleeping and deep sleeping. So deep sleeping means unconsciousness. So when a man dies from awakening state, he enters into the dreaming state and then enters into the deep sleeping state. So transmigration of the soul means he gives up this gross body, and the subtle body, mind, intelligence carries him to the another body, and in another body, unless the body is prepared properly, he lives in deep sleep. And when the body is prepared at seven months for human being, then he comes to consciousness. He feels, "Oh, why I am put into this packed-up status." If he is pious he feels very uncomfortable. He prays to God—these things are described—that "Kindly excuse me from this awkward position. Now this time I shall become a devotee." This is position. The soul is immortal, but still he enters into different stages of life. Then when he comes out, the same different stages of body continues. In childhood he is something different from his boyhood; boyhood something different from youthhood; and he is the same, but he is passing through different... That is called evolution. So when he comes to the perfect stage of Kṛṣṇa consciousness, then his life is successful. Just like a flower, in the bud stage, in the fructified stage, in the blooming stage, and when it is fully bloomed it looks very nice, beautiful. Similarly, when by gradual development when you come to the stage of Kṛṣṇa consciousness, then our whole beauty is revealed.