Plato
... Simmias, is one of the people that object that the soul being immortal, he states that “If them the soul is a kind of harmony or attunement, clearly, when out body is relaxed or stretched without due measure by diseases and other evils, the soul must immediately be destroyed, even if it be most divine, (Plato 195). ... ”Consider what we shall say in answer to one who deems the soul to be a mixture of bodily elements and to be the first to perish in the process we call death”(Plato 125). ... Therefore, I cannot accept the theory that the soul is a harmony either from myself or anyone else” (Plato 131). ... A harmony is not like that to which you compare it; the lyre and the strings and the notes, though still unharmonized, exist; the harmony is composed last of all, and is the first to be destroyed”(Plato 130).