The equation a2 + b2 + c2 , one of the earliest expressions of formalized mathematics, and a compendium on philosophy were written in 500 B.C. by Pythagoras of Samos. Euclid, the father of geometry, wrote of his findings and inventions in a series of thirteen journals which have survived the 2,500 years from his writing to our reading in 2012. Some 2,000 years ago in his home in Greece, Aristotle wrote his observations on the nature of human beings which we now read in every part of the world.
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