A significant Intellectual movement which had large influence on the cultural and societal aspects of the Renaissance was humanism, or more distinctly known as Renaissance humanism. Renaissance humanism is a system of education and a mode of inquiry which emphasized human potential to attain excellence through the study of classical texts, art and civilizations of Greece and Rome. This idealism originated in the late 13th to early 14th century in northern Italy later spreading through continental Europe and England dominating European thought. An important figure of Renaissance humanism is Francesco Petrarch, who has been called the Father of Italian Humanism; He saw classic writings as a moral guidance that can reform humanity, while also mixing in religion, arguing that history can have a positive affect on a Christian soul. His ideology was significant to the progression of humanism in the 14th century as it allowed it to spread more effectively because without his ideology many would have seen humanism as threatening Christianity. The intellectual movement of humanism during the 13th to the late 15 century change the way in which people spoke, wrote, and how they thought about humanity, art and philosophy.