Ancient Greek and Roman geographers knew the approximate size of the globe, but remained ignorant of many parts of it. Eratosthenes of Cyrene (276–196BC) deduced the circumference of the Earth with remarkable accuracy, within 10% of the correct value. The Greek cartographer Crates created a globe about 150BC.[3]
Claudius Ptolemy (83–161) calculated the Earth's surface in his Geography and described the inhabited portion as spanning 180degrees of longitude, from the Fortunate Isles in the west to Serica (northern China) in the east and about 80degrees of latitude,[4] from Thule in the north to anti-Meroë and Macrobia below the equator. At its widest possible extent, the ancient ecumene thus stretched from northern Europe to equatorial Africa, and from the Atlantic Ocean to western China.
During the Middle Ages, this picture of the world was widened to accommodate Scandinavia, the North Atlantic, East Asia, and eventually sub-equatorial Africa. Ptolemy and other ancient geographers were well aware that they had a limited view of the ecumene, and that their knowledge extended to only a quarter of the globe.[citation needed]
These geographers acknowledged the existence of terrae incognitae, 'unknown lands', within Africa, Europe and Asia. A belief in global symmetry led many Greco-Roman geographers to posit other continents elsewhere on the globe, which existed in balance with the ecumene: Perioeci (lit.'beside the ecumene'), Antoeci ('opposite the ecumene') and the Antipodes ('opposite the feet').
Rome
The cameo Gemma Augustea includes a Roman artistic personification of Oikoumene as she crowns an emperor, probably Augustus, perhaps for bringing peace to the (Roman) world.
Pope Gregory I objected to the adoption of this style by John IV of Constantinople, as it implied a universal jurisdiction he believed illegal to anyone.[6] His Fifth Epistle berates John for having "attempted to seize upon a new name, whereby the hearts of all your brethren might have come to take offence",[7] despite the title having been granted at the emperor Maurice's behest.
The name continues to be borne by the Greek Orthodox patriarchs, although with the more restricted sense that they are the bishops of the former imperial capital.[8]
Especially in the 20th century, the term has been employed to refer to unified Christian Church which is the ultimate goal of Ecumenism, a movement to promote cooperation among the various Christian denominations. The movement is not accepted by many Christian groups. The work of ecumenism takes place in the form of negotiations conducted between committees of various denominations and also through the deliberations of inter-denominational organizations such as the World Council of Churches who have registered as their web domain oikoumene.org. Relevant issues include Baptism, the Eucharist and Ministry.
Culture
Known world of the Mesopotamian, Babylonian, and Assyrian cultures from documentary sources
Peter Sloterdijk uses the terms "First Ecumene" and "Second Ecumene" in his book In the World Interior of Capital[10] (2014, original German: Im Weltinnenraum des Kapitals, 2005).[11] Sloterdijk takes these terms directly from the work of Eric Voegelin, specifically from Order and History vol. 4, The Ecumenic Age (1974),[12][need quotation to verify] which he quotes.
Science fiction writer Ursula Le Guin derived the term Ekumen in her Hainish Cycle from this term.[13]
The term "ecumene" can differ depending on the viewpoint from which it is perceived: for example, the Ancient Babylonians and the Ancient Greeks would each have known a different area of the world (though their worlds may have overlapped).
↑"The Universal Patriarch", The Witness(PDF), vol.XXV, No. 13, August 3/16, 1981, Boston, Massachusetts: Holy Transfiguration Monastery, archived from the original(PDF) on 2008-12-17, retrieved 2008-01-03
↑Sloterdijk, Peter; Hoban, Wieland (2013-10-07). In the world interior of capital: for a philosophical theory of globalization (Englished.). Cambridge, UK: Polity Press. pp.143–148. ISBN9780745647692. OCLC860834263.