many of my friends think I should only focus on the celebrities in history such as great scientists like Einstein or artists like Van Gogh, when I'm writing something about the greatness of individuals. But I think if a person with some kind of merits in humanity, say one is always ready to help others who are in trouble can have the greatness. It's not necessary for individuals to become famous to have some greatness. Is this right? I'm not a native speaker. I hope I have described my case clearly.