e of the sciences.
             Plato 427 – 347 BCE Aristotle 384-322 BCE, Greek philosopher's whose teachings introduced the idea that music is ethical. Plato believed that music could generate ethical space and could have an effect on the moral fibre of a person. The power to cleanse, to create an 'ethos'. He believed that the idea is created by the thinkers (Speclatores) and that it's interpretation is a mirror of the idea (Speclum), and that the representation was carried out by the doers, the musicians, artists etc (Cantores). Plato believed that thinkers were more important than doers. Music was seen as one of the sciences and therefore was controlled by the theorists (Speculatores) who decreed that music should be good to transmit good things lest it should introduce impure thoughts. Music in it's most superior form could not be heard. Only by mirroring (Speculum) could it be heard.
             Aristoxenus 375 BCE, student of Xenophilus and Aristotle researched pitch, intervals, scales, keys, modulation and constructed melodies. He introduced the Tetrachord (4-note). Aristoxenus wrote books on both listening to and making music and playing instruments. He examined the nature of rhythm (strong vs weak) and supported division into 3 as perfect, and into 2 as imperfect using Pythagoras' ideas on number perfection.
             Emperor Constantine 306 – 337 AD, became the emperor of Rome in 306, and was the most powerful person in his part of the world. His conversion to Christianity had far reaching effects on the common practice of the religion and on all the factions of Christianity that are present today. His conversion happened during a war with his brother-in-law and co-emperor, Maxentius. According to the historian Eusebius , Bishop of Caesarea in Palestine, before the crucial battle of Milvian Bridge, Constantine was convinced that he needed divine assistance. While he was praying for such assistance, ...