 The ways in which Ibn Sina's Canon of Medicine worked to bring together various disciplines and cultures, essentially revived Greek authors and philosophers and fostered new thought patterns to develop much of the future medical practices we see today.Ibn Sina did this by combining the medical developments of Greek physician and philosopher Galen, with the philosophy of Aristotle.Furthermore, as Islamic medicine recognized that many diseases are contagious, such as leprosy, smallpox, and sexually transmitted diseases, Ibn Sina recognized tuberculosis as a contagious disease, among others which can be spread through soil and water.