Like appearances, words can be deceptive. The words that historians use to describe the intellectual and social aspects of the past often foster a false impression in modern minds: “humanism,” “renaissance,” “feudalism,” “enlightenment,” “dialectic,” are modern linguistic innovations, which reflect today’s sensibilities and have little to with the past. The scholars in 15th century didn’t use the term “humanism”; they were not aware of the concept of humanism—they certainly didn’t think of their are as a Renaissance. Between 9th and 15th century, people didn’t see their social system as feudalism—they had a different conception of their society. The term “enlightenment” came into being in the middle of the 19th century and it quickly acquired a meaning that is different from the way the French Enlightenment philosophes saw themselves. Aristotle uses the word “dialectic,” not in the modern Kantian sense but for the science of what happens, when, instead of thinking by ourselves, we try to convince others.