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, 21:07, October 19, 2010
In [[Ancient Greece]], "the ultimate cause was considered to be water by [[Thales]], fire by [[Heraclitus]], ''einai'' by [[Parmenides]], number by [[Pythagoras]], atom by [[Democritus]], idea by [[Plato]] and [[eidos]] and ''hyle'' by [[Aristotle]]." [http://www.unification.org/ucbooks/UT/UT-1-1.htm]