The ecumene (US) or oecumene (UK; Greek: οἰκουμένη, oikouménē, lit. "inhabited") was an ancient Greek term for the known world, the inhabited world, or the habitable world. Under the Roman Empire, it came to refer to civilization and the secular and religious imperial administration. In present usage, it is used as the noun form of "ecumenical" and describes the Christian Church as a unified whole or the unified modern world civilization. It is also used in cartography to describe a type of world map (mappa mundi) used in late Antiquity and the Middle Ages.
Eratosthenes of Cyrene (276–196 BC) deduced the circumference of the Earth with remarkable accuracy (within 10% of the correct value). The Greek cartographer Crates created a globe about 150 BC. Claudius Ptolemy (83–161) calculated the Earth's surface in his Geography and described the inhabited portion as spanning 180 degrees of longitude (from the Fortunate Isles in the west to Serae and Serica (China) in the east) and about 80 degrees of latitude (from Thule in the north to anti-Meroë below the equator). Ptolemy was well aware that the Romans knew only about a quarter of the globe and his erroneous belief that the Indian Ocean was landlocked led to expectation of a terra incognita ("unknown land"). In fact, symmetry led him to expect that there should be three other continents to balance the ecumene: Perioeci (lit. "beside the ecumene"), Antoeci ("opposite the ecumene") and the Antipodes (“opposite the feet”).
By that time, the Greek term had come to refer more specifically to the civilized world and then simply the Roman Empire. This usage continued after the Diocletian Reforms and the Byzantine emperors used it to refer to their imperial administration. Constantinople was the "Ecumenical City" and, after 586, the Patriarch of Constantinople was known as the "Ecumenical Patriarch of Constantinople". Pope Gregory I objected to the adoption of this style by John IV of Constantinople, as it implied a universal jurisdiction he believed to be held by the bishop of Rome. 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", 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.
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. Relevant issues include Baptism, the Eucharist and Ministry.
In the context of cultural history, Lewis Mumford used the term "ecumene" in an academic sense in his work, Technics and Civilization (1934). William H. McNeill later popularized it in his Rise of the West (1963), suggesting that a single global ecumene emerged through the dominance of European political institutions, science, technology, and economic forms from the late 18th century onwards. One could argue that prior to the great voyages of discovery carried out by Christopher Columbus, Vasco da Gama, and Ferdinand Magellan, there were originally two separate ecumenes—one covering the Old World and one the New. The Spanish conquistadores fused these two ecumenes to form a single integrated "world system".
Peter Sloterdijk uses the terms "First Ecumene" and "Second Ecumene" in his book In the World Interior of Capital (2014, original German: Im Weltinnenraum des Kapitals, 2005). Sloterdijk takes these terms directly from the work of Eric Voegelin, specifically from Order and History vol. 4, The Ecumenic Age (1974), which he quotes.
Note that 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). Compare image to the right.
- Oxford English Dictionary. "œcumene, n."
- Klein, Samuel John (2005), "Oecumene", Cartography Word of the Day, Designorati, retrieved 2008-01-03
- Although Ptolemy did not measure latitude with degrees but with hours of midsummer daylight, from 12 at the equator to 24 in the arctic.
- Schaff, Philip (1882), "Gregory and the Universal Episcopate", History of the Christian Church, IV: Mediaeval Christianity: A.D. 590–1073, Peabody, Massachusetts: Hendrickson Publishers; 3rd edition (July 1, 1996), ISBN 978-1-56563-196-0, retrieved 2008-01-03
- St Gregory the Great. Epistle V, §xviii.
- "The Universal Patriarch", The Witness (PDF), XXV, No. 13, August 3/16, 1981, Boston, Massachusetts: Holy Transfiguration Monastery, retrieved 2008-01-03
- Mumford, Lewis (1934), Technics and Civilization, New York: Harcourt, archived from the original on 2008-07-20, retrieved 2008-01-03
- 1947-, Sloterdijk, Peter,. In the world interior of capital : for a philosophical theory of globalization. Hoban, Wieland, (English ed.). Cambridge, UK. pp. 143–148. ISBN 9780745647692. OCLC 860834263.
- 1901-1985., Voegelin, Eric, (2007) . The collected works of Eric Voegelin. Sandoz, Ellis, 1931-, Weiss, Gilbert,, Petropulos, William,. Baton Rouge: Louisiana State University Press. ISBN 9780826213013. OCLC 21151456.