In 1417 during the Middle Ages, an Italian book hunter, Poggio Bracciolini, found an obscure manuscript tucked away in a far-off monastery. Poggio had found the poem "On the Nature of Things" written by Lucretius over 1000 years ago. The poem was beautiful and dangerous. The ideas it contained contradicted directly with the teachings of the church. "On the Nature of Things" would eventually influence such great men such as Galileo, Freud, Darwin, Einstein and even Thomas Jefferson.