Syracuse are but a few of these men. Thales was the founder of the notion of mathematical proof based on established definition and axioms. Euclid’s great contribution was that of cataloging and organizing, in a logical sequence, allmathematics known prior to his time. Much of his book, Elements, comprises the basic content of the geometry taught in our schools today. The rare and brilliant genius of Archimedes brought the abstract ideas of mathematics to bear on the many branches of physical science. The Law ofthe lever,the principles of buoyancy and density of matter, and the concept, center of gravity, are all products of his mind.