Our birth is but a sleep and a forgetting: The soul that rises with us, our life’s star, Hath had elsewhere its setting, And cometh from afar; Not in entire forgetfulness, And not in utter nakedness, But trailing clouds of glory do we come From God, who is our home. But as Simmias and Cebes in the Phaedo point out, this doctrine only shows that the soul existed before the body; it does not prove that the soul is immortal. Socrates therefore goes on to prove this further point, largely by showing the simple and unchanging nature of the soul which is like that of the ideas, and he therefore concludes that since it cannot admit of change, it must be free from death. Again he argues that since the soul can rule and use the body as it will, it must be anterior to the body and hence have an eternal and never ending existence.[194] The final and apparently most convincing proof to Plato’s mind, in spite of its dialectic character, is that the notion of life cannot be separated from the soul, for the soul is that which gives life; therefore since a dead soul is an impossibility, we must agree that the soul is immortal.[195] To follow out in detail the other arguments would occupy too much time now, interesting as it might prove. Indeed if we were to rehearse all of Plato’s proofs of the immortality of the soul, we should run through practically the entire gamut of the arguments which have ever been offered. His frequent return to the subject indicates the importance which he gave to the belief.