[27] Let this be taken as a testimony delivered by Plato to the imperishable nature of the world. Its uncreated character follows from the truth of natural philosophy; for dissolution must of necessity attend everything which is born, and incorruptibility must inevitably belong to everything which is unborn; since the poet who wrote the following iambic verse, / "All that is born must surely die," [13] appears to have spoken very correctly when he asserted this connection of destructibility with birth.