Natural philosophy, 41 Greek origins

Al-Razi (Rhazes, 854-925) was a Persian who studied in Baghdad. Al-Razi wrote extensively on medicine, philosophy, astronomy, and alchemy, but he was primarily a physician. Al-Razi was less mystical than his contemporary alchemists and classified chemicals by their origin. According to Al-Razi, chemicals came from either animals, plants, and minerals or were derived from other chemicals. Al-Razi wrote The Comprehensive Book, which was an enormous medical encyclopedia that synthesized medical practices of ancient Greeks, Syrians, Arabs, and Persians. Al-Razi was the first person known to describe the disease smallpox. Most of his alchemical writings have been lost, but Al-Razi believed in the atomic nature of matter. Al-Razi took a systematic approach to science and rejected the idea of divine intervention. His rational methods and descriptions were more consistent with modern science than most individuals of his time. Ali al Husayn ibn Sina (Avicenna, 980-1037) was another Persian physician whose voluminous works, including The... 

The Scientific Revolution can be regarded as a battle between three different ways of looking at the natural world. These can be termed the Aristotelian, the magical and the mechanical. All three traditions had their origins in either the Greek or the Hellenistic periods. It was the ultimate triumph of the mechanical philosophy which was to result in the birth of modem science. 

---