Louis Pasteur was born on December 27, 1822, in Dôle, a small town in France. He grew in a humble family and his father was a tanner. He graduated in 1840 from the College of Arts at Besancon and entered the prestigious Ecole Namale Supervieure, Paris, to work for his doctorate degree. He chose for his studies the then obscure science of crystallography, which was to have a great influence on his career. Pasteur entered the scientific world as a professor of physics at the Lycee of Tournon and started his research on the optical properties of crystals of tartaric acid salts. He found the two f