Geocentric model knew about Tusi's work or that of the Maragha school. Not all Greeks agreed with the geocentric model. The Pythagorean system has already been mentioned; some Pythagoreans believed the Earth to be one of several planets going around a central fire. Hicetas and Ecphantus, two Pythagoreans of the 5th century BC, and Heraclides Ponticus in the 4th century BC, believed that the Earth rotated on its axis but remained at the center of the universe. Such a system still qualifies as geocentric. It was revived in the Middle Ages by Jean Buridan. Heraclides Ponticus was once thought to have proposed
Central Churchmanship which are perceived as being extreme by Central Churchmen. F. A. Iremonger places William Temple among this group emphasizing that Temple had a firm hold on the articles of the historic creeds and a conviction that what is best in each school of thought within the Church is worth conserving. Perhaps the best known exponent of the Central Churchman position in the twentieth century was Geoffrey Francis Fisher, Archbishop of Canterbury from 1945 to 1961. Many other well-known English bishops, including Robert Stopford, Henry Montgomery Campbell, and Mervyn Haigh also favoured a Central Churchmanship approach, as a way of defusing