Not much is known about Euclid who was born around 300 BC somewhere in Greece.  At the same time the Romans were building the first aqueduct, and the Chinese were inventing the crossbow.  Euclid probably studied at Plato’s academy in Athens, and lectured at the university in Alexandria.  His famous book, "Euclid’s Elements", gathered all the knowledge of the time and included the work of Pythagoras, Eudoxus, inventor of mathematical astronomy, Hippasus, discover of irrational numbers and Hippocrates of Chios, originator of proof by contradiction. Although no original copies of his book exist today, translations into other languages have been used to recreate the original.

Euclid became known as the father of geometry, and his book has influenced philosophy and science for thousands of years. His methods were used by Galileo to study falling objects, Kepler for his laws of motion, and Newton in his study of gravity.  Einstein’s theory of relativity is a modern example of non-Euclidian science, but Euclidian geometry is still in use today.  Each generation of science learns from the previous generation and teaches the next.