 Two Islamic thinkers are particularly important to the history of medieval skepticism. Al-Ghazali (Algazel to the Latin-speaking world) (ca. 1058–1111) travelled throughout the Middle East, but spent most of his time in what are now Iran and Iraq. Al-Haytham (= Alhazen) (965–1039), who was born in what is now Basra, Iraq, wrote widely on various scientific and mathematical subjects. In addition, while the Persian philosophers Rāzī (1149–1210) and Ṭūsī (1201–1274) are not skeptics, their concerns with global skepticism and the knowledge of first principles lead them to have extended discussions of skeptical arguments. For more on Rāzī and Ṭūsī, see Fatoorchi (2013).