The Categorical Imperative is supposed to provide a way for us to evaluate moral actions and to make moral judgments. It is not a command to perform specific actions -- it does not say, follow the 10 commandments, or respect your elders.
A blurb on a book can be any combination of quotes from the work, the author, the publisher, reviewers or fans, a summary of the plot, a biography of the author or simply claims about the importance of the work.
The short summary of a book, usually on the inside cover or back, that most people read so they can say they read the book. We had to read a book for school, but I just read the blurb/. by Oh Just Someone January 24, 2016.