The doctrine of Ethos was based on the belief of Ethos as qualities and customs of prudence and knowledge through moral experiences and behaviors of courage and temperance and their opposite states. It is related to musical thought because it has moral meaning and qualities that represent the traits of humanity through philosophies and theories that express the contexts of both fields. The writers expressed different points of view and the meaning of numerous terms was transformed. Music acts on behavior because it represents passions and states of the soul.
