Oct. 20 is the National Day on Writing, sponsored by the National Council of Teachers of English, the National Writing Project, The New York Times Learning Network, and The Teaching Channel, and in observance of the celebration, Twitter wants to know: Why do writers write?

Using the hashtag #WhyIWrite, writers around the world are taking to Twitter to tell their followers what compels them to put words on a page. Even some people who are famous for things other than writing, including Steelers linebacker Vince Williams, among others, have been using the hashtag.

Check out some of the best tweets below.