Greek historian, geographer and mythographer from Messina (Messena), Sicily, who made profound changes in the geography of Anaximander and Hecateus. He was a Westerner, first influenced by Pythagoreanism, then moving on to the peripatetic circle. He occupied himself more with non-philosophical subjects and his most notorious investigations are in the area of politics, literary history, geography. He created a planisphere in which the position of each geographic region was established in relation to the distance that separated it from an imaginary line oriented from east to west, called the diaphragm. He adhered to the theory of soul harmony, as the Pythagorean Simmias expounded it in Plato's Fedon.
It is not a substance distinct from the body, but the epiphenomenon arising from the harmony of different parts of the body. He adhered to the theory of soul harmony and, as a result, in this regard, departed from Aristotle's position, for whom the soul is another substance informing the body, although not in accordance with the radical dualism of Plato. He lived for a long time in Sparta and wrote Life of the Greeks, on the Hellenic civilization, from which he conserved some parts, whose importance is that they constitute one of the first essays on the history of culture. Also notable are Three Political Books, or Constitution of Sparta, preserved only in fragments, in which he advised a mixed constitution, - democratic, aristocratic, monarchical.
Source: http://www.dec.ufcg.edu.br/biografias/
Order D - Biography - Brazil School
Source: Brazil School - https://brasilescola.uol.com.br/biografia/dicearco-messina.htm